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3/21/2015 Metaphysics - Wikipedia, the free encyclopedia

http://en.wikipedia.org/wiki/Metaphysics

MetaphysicsFrom Wikipedia, the free encyclopedia

Metaphysicsis a traditional branch of philosophy concerned with explaining the fundamental nature of

being and the world that encompasses it,[1]although the term is not easily defined.[2]Traditionally,

metaphysics attempts to answer two basic questions in the broadest possible terms:[3]

1. What is ultimately there?

2. What is it like?

A person who studies metaphysics is called a metaphysicist[4]or a metaphysician.[5]The metaphysicianattempts to clarify the fundamental notions by which people understand the world, e.g., existence, objectsand their properties, space and time, cause and effect, and possibility. A central branch of metaphysics isontology, the investigation into the basic categories of being and how they relate to each other. Anothercentral branch of metaphysics is cosmology, the study of the origin, fundamental structure, nature, anddynamics of the universe. Some include Epistemology as another central focus of metaphysics, but this can

be questioned.

Prior to the modern history of science, scientific questions were addressed as a part of metaphysics knownas natural philosophy. Originally, the term "science" (Latinscientia) simply meant "knowledge". Thescientific method, however, transformed natural philosophy into an empirical activity deriving fromexperiment unlike therest of philosophy. By the endof the 18th century, it had begun to be called "scienceto distinguish it fromphilosophy. Thereafter, metaphysics denoted philosophical enquiry of a non-empiric

character into the nature of existence.[6]Some philosophers of science, such as the neo-positivists, say thatnatural science rejects the study of metaphysics,while other philosophers of science strongly disagree.

Contents

1 Etymology

2 Origins and nature of metaphysics

3 Central questions

3.1 Being, existence and reality

3.2 Empirical and conceptual objects

3.2.1 Objects and their properties

3.3 Cosmology and cosmogony

3.4 Determinism and free will

3.5 Identity and change

3.6 Mind and matter

3.7 Necessity and possibility

3.8 Religion and spirituality
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http://en.wikipedia.org/wiki/Metaphysics 2

3.9 Space and time

3.10 The Nature of Metaphysics

4 Styles and methods of metaphysics

5 History and schools of metaphysics

5.1 Pre-Socratic metaphysics in Greece

5.2 Socrates and Plato

5.3 Aristotle

5.4 Scholasticism and the Middle Ages

5.5 Rationalism and Continental Rationalism

5.6 British empiricism

5.7 Kant

5.8 Early analytical philosophy and positivism

5.9 Continental philosophy

5.10 Process Metaphysics

5.11 Later analytical philosophy

6 Rejections of metaphysics

7 Metaphysics in science

8 See also

9 Notes and references

10 Bibliography

11 Further reading

12 External links

Etymology

The word "metaphysics" derives from the Greek words (met, "beyond", "upon" or "after") and

(physik, "physics").[7]It was first used as the title for several of Aristotle's works, because theywere usually anthologized after the works on physics in complete editions. The prefix meta-("after")indicates that these works come "after" the chapters on physics. However, Aristotle himself did not call the

subject of these books "Metaphysics": he referred to it as "first philosophy." The editor of Aristotle's workAndronicus of Rhodes, is thought to have placed the books on first philosophy right after another work,

Physics, and called them (ta meta ta physika biblia) or "the books that come aftethe [books on] physics". This was misread by Latin scholiasts, who thought it meant "the science of what i

beyond the physical".

However, once the name was given, the commentators sought to find intrinsic reasons for itsappropriateness. For instance, it was understood to mean "the science of the world beyond nature" (physisin Greek), that is, the science of the immaterial. Again, it was understood to refer to the chronological or
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pedagogical order among our philosophical studies, so that the "metaphysical sciences" would mean "thosthat we study after having mastered the sciences that deal with the physical world" (St. Thomas Aquinas,

Expositio in librum Boethii De hebdomadibus, V, 1).

There is a widespread use of the term in current popular literature which replicates this understanding, i.e.that the metaphysical equates to the non-physical: thus, "metaphysical healing" means healing by means o

remedies that are not physical.[8]

Origins and nature of metaphysics

Although the word"metaphysics" goes back to Aristotelean philosophy, Aristotle himself credited earlierphilosophers with dealing with metaphysical questions. The first known philosopher, according to Aristotlis Thales of Miletus, who taught that all things derive from a single first cause orArche.

Metaphysics as a discipline was a central part of academic inquiry and scholarly education even before theage of Aristotle, who considered it "the Queen of Sciences." Its issues were considered no less importantthan the other main formal subjects of physical science, medicine, mathematics, poetics and music. Since

the beginning of modern philosophy during the seventeenth century, problems that were not originallyconsidered within the bounds of metaphysics have been added to its purview, while other problemsconsidered metaphysical for centuries are now typically subjects of their own separate regions in

philosophy, such as philosophy of religion, philosophy of mind, philosophy of perception, philosophy oflanguage, and philosophy of science.

Central questions

Most positions that can be taken with regards to any of the following questions are endorsed by one oranother notable philosopher. It is often difficult to frame the questions in a non-controversial manner.

Being, existence and reality

The nature of Being is a perennial topic in metaphysics. For instance, Parmenides taught that reality was asingle unchanging Being. The 20th century philosopher Heidegger thought previous philosophers had lostsight of the question of Being (qua Being) in favour of the questions of beings (existing things), so that areturn to the Parmenidean approach was needed. An ontological catalogue is an attempt to list thefundamental constituents of reality. The question of whether or not existence is a predicate has beendiscussed since the Early Modern period, not least in relation to the ontological argument for the existenceof God. Existence, thatsomething is, has been contrasted with essence, the question of whatsomething is.

Reflections on the nature of the connection and distinction between existence and essence dates back toAristotle'sMetaphysics, and later found one of its most influential interpretations in the ontology of the

eleventh century metaphysician Avicenna (Ibn Sina).[9]Since existence without essence seems blank, it isassociated with nothingness by philosophers such as Hegel.

Empirical and conceptual objects

Objects and their properties
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The world seems to contain many individual things, both physical, like apples, and abstract, such as loveand the number 3; the former objects are called particulars. Particularsare said to have attributes, e.g.,size, shape, color, location, and two particulars may have some such attributes in common. Such attributesare also termed Universals or Properties; the nature of these, and whether they have any real existence andif so of what kind, is a long-standing issue, realism and nominalism representing opposing views.

Metaphysicians concerned with questions about universals or particulars are interested in the nature ofobjects and their properties, and the relationship between the two. Some, e.g., Plato, argue that properties

are abstract objects, existing outside of space and time, to which particular objects bear special relations.David Armstrong holds that universals exist in time and space but only at their instantiation and theirdiscovery is a function of science. Others maintain that particulars are a bundle or collection of properties(specifically, a bundle of properties they have).

Biological literature contains abundant references to taxa (singular "taxon"), groups like the mammals orthe poppies. Some authors claim (or at least presuppose) that taxa are real entities, that to say that an animais included in Mammalia (the scientific name for the mammal group) is to say that it bears a certain relatio

to Mammalia, an abstract object.[10]Advocates of phylogenetic nomenclature, a more nominalistic view,oppose this reading; in their opinion, calling an animal a mammal is a shorthand way of saying that it is

descended from the last common ancestor of, say, humans and platypuses.[11]

Cosmology and cosmogony

Metaphysical Cosmologyis the branch of metaphysics that deals with the world as the totality of allphenomena in space and time. Historically, it has had quite a broad scope, and in many cases was foundedin religion. The ancient Greeks drew no distinction between this use and their model for the cosmos.However, in modern times it addresses questions about the Universe which are beyond the scope of the

physical sciences. It is distinguished from religious cosmology in that it approaches these questions usingphilosophical methods (e.g. dialectics).

Cosmogonydeals specifically with the origin of the universe.

Modern metaphysical cosmology and cosmogony try to address questions such as:

What is the origin of the Universe? What is its first cause? Is its existence necessary? (see monism,

pantheism, emanationism and creationism)

What are the ultimate material components of the Universe? (see mechanism, dynamism,

hylomorphism, atomism)

What is the ultimate reason for the existence of the Universe? Does the cosmos have a purpose? (see

teleology)

Determinism and free will

Determinism is the philosophical proposition that every event, including human cognition, decision andaction, is causally determined by an unbroken chain of prior occurrences. It holds that nothing happens thahas not already been determined. The principal consequence of the deterministic claim is that it poses achallenge to the existence of free will.
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The problem of free will is the problem of whether rational agents exercise control over their own actionsand decisions. Addressing this problem requires understanding the relation between freedom and causationand determining whether the laws of nature are causally deterministic. Some philosophers, known asIncompatibilists, view determinism and free will as mutually exclusive. If they believe in determinism, thewill therefore believe free will to be an illusion, a position known asHard Determinism. Proponents rangefrom Baruch Spinoza to Ted Honderich.

Others, labeled Compatibilists (or "Soft Determinists"), believe that the two ideas can be coherently

reconciled. Adherents of this view include Thomas Hobbes and many modern philosophers such as JohnMartin Fischer.

Incompatibilists who accept free will but reject determinism are called Libertarians, a term not to beconfused with the political sense. Robert Kane and Alvin Plantinga are modern defenders of this theory.

Identity and change

The Greeks took some extreme positions on the nature of change: Parmenides denied that change occurs aall, while Heraclitus thought change was ubiquitous: "[Y]ou cannot step into the same river twice."

Identity, sometimes called Numerical Identity, is the relation that a "thing" bears to itself, and which no"thing" bears to anything other than itself (cf. sameness). According to Leibniz, if some object xis identicato some object y, then any property that xhas, ywill have as well. However, it seems, too, that objects canchange over time. If one were to look at a tree one day, and the tree later lost a leaf, it would seem that onecould still be looking at that same tree. Two rival theories to account for the relationship between changeand identity are Perdurantism, which treats the tree as a series of tree-stages, and Endurantism, whichmaintains that the treethe same treeis present at every stage in its history.

Mind and matter

The nature of matter was a problem in its own right in early philosophy. Aristotle himself introduced theidea of matter in general to the Western world, adapting the term hyle, which originally meant "lumber."Early debates centered on identifying a single underlying principle. Water was claimed by Thales, air byAnaximenes,Apeiron(the Boundless) by Anaximander, fire by Heraclitus. Democritus, in conjunction withis mentor, Leucippus, conceived of an atomic theory many centuries before it was accepted by modernscience. It is worth noting, however, that the grounds necessary to ensure validity to the proposed theory'sveridical nature were not scientific, but just as philosophical as those traditions espoused by Thales andAnaximander.

The nature of the mind and its relation to the body has been seen as more of a problem as science hasprogressed in its mechanistic understanding of the brain and body. Proposed solutions often haveramifications about the nature of mind as a whole. Ren Descartes proposed substance dualism, a theory inwhich mind and body are essentially different, with the mind having some of the attributes traditionallyassigned to the soul, in the seventeenth century. This creates a conceptual puzzle about how the two intera(which has received some strange answers, such as occasionalism). Evidence of a close relationship

between brain and mind, such as the Phineas Gage case, have made this form of dualism increasinglyunpopular.
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Another proposal discussing the mind-body problem is idealism, in which the material is sweepinglyeliminated in favor of the mental. Idealists, such as George Berkeley, claim that material objects do notexist unless perceived and only as perceptions. The "German idealists" such as Fichte, Hegel andSchopenhauer took Kant as their starting-point, although it is debatable how much of an idealist Kanthimself was. Idealism is also a common theme in Eastern philosophy. Related ideas are panpsychism and

panexperientialism, which say everything hasa mind rather than everything exists ina mind. Alfred NorthWhitehead was a twentieth-century exponent of this approach.

Idealism is a monistic theory which holds that there is a single universal substance or principle. Neutralmonism, associated in different forms with Baruch Spinoza and Bertrand Russell, seeks to be less extremethan idealism, and to avoid the problems of substance dualism. It claims that existence consists of a singlesubstance that in itself is neither mental nor physical, but is capable of mental and physical aspects orattributes thus it implies a dual-aspect theory.

For the last one hundred years, the dominant metaphysics has without a doubt been materialistic monism.Type identity theory, token identity theory, functionalism, reductive physicalism, nonreductive physicalismeliminative materialism, anomalous monism, property dualism, epiphenomenalism and emergence are justsome of the candidates for a scientifically informed account of the mind. (It should be noted that while

many of these positions are dualisms, none of them aresubstancedualism.)

Prominent recent philosophers of mind include David Armstrong, Ned Block, David Chalmers, Patricia anPaul Churchland, Donald Davidson, Daniel Dennett, Fred Dretske, Douglas Hofstadter, Jerry Fodor, DavidLewis, Thomas Nagel, Hilary Putnam, John Searle, John Smart, Ludwig Wittgenstein, and Fred Alan Wol

Necessity and possibility

Metaphysicians investigate questions about the ways the world could have been. David Lewis, in "On thePlurality of Worlds," endorsed a view called Concrete Modal realism, according to which facts about how

things could have been are made true by other concrete worlds, just like ours, in which things are differentOther philosophers, such as Gottfried Leibniz, have dealt with the idea of possible worlds as well. The ideof necessity is that any necessary fact is true across all possible worlds. A possible fact is true in some

possible world, even if not in the actual world. For example, it is possible that cats could have had two tailor that any particular apple could have not existed. By contrast, certain propositions seem necessarily true,such as analytic propositions, e.g., "All bachelors are unmarried." The particular example of analytic truth

being necessary is not universally held among philosophers. A less controversial view might be that self-identity is necessary, as it seems fundamentally incoherent to claim that for any x, it is not identical to itselthis is known as the law of identity, a putative "first principle". Aristotle describes theprinciple of non-contradiction, "It is impossible that the same quality should both belong and not belong to the same thing

This is the most certain of all principles ... Wherefore they who demonstrate refer to this as an ultimateopinion. For it is by nature the source of all the other axioms."

Religion and spirituality

Theology is the study of a god or gods and the nature of the divine. Whether there is a god (monotheism),many gods (polytheism) or no gods (atheism), or whether it is unknown or unknowable whether any godsexist (agnosticism; apophatic theology), and whether a divine entity directly intervenes in the world
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(theism), or its sole function is to be the first cause of the universe (deism); these and whether a god or godand the world are different (as in panentheism and dualism), or are identical (as in pantheism), are some ofthe primary metaphysical questions concerning philosophy of religion.

Within the standard Western philosophical tradition, theology reached its peak under the medieval school thought known as scholasticism, which focused primarily on the metaphysical aspects of Christianity. The

work of the scholastics is still an integral part of modern philosophy,[12]with key figures such as Thomas

Aquinas still playing an important role in the philosophy of religion.[13]

Space and time

In Book XI of the Confessions, Saint Augustine of Hippo asked the fundamental question about the natureof time. A traditional realist position in ontology is that time and space have existence apart from the humamind. Idealists, including Kant, claim that space and time are mental constructs used to organize

perceptions, or are otherwise surreal.

Suppose that one is sitting at a table, with an apple in front of him or her; the apple exists in space and in

time, but what does this statement indicate? Could it be said, for example, that space is like an invisiblethree-dimensional grid in which the apple is positioned? Suppose the apple, and all physical objects in theuniverse, were removed from existence entirely. Would space as an "invisible grid" still exist? RenDescartes and Leibniz believed it would not, arguing that without physical objects, "space" would bemeaningless because space is the framework upon which we understand how physical objects are related teach other. Newton, on the other hand, argued for an absolute "container" space. The pendulum swung bacto relational space with Einstein and Ernst Mach.

While the absolute/relative debate, and the realism debate are equally applicable to time and space, timepresents some special problems of its own. Theflowof time has been denied in ancient times byParmenides and more recently by J. M. E. McTaggart in his paper The Unreality of Time.

The directionof time, also known as "time's arrow", is also a puzzle, although physics is now driving thedebate rather than philosophy. It appears that fundamental laws are time-reversible and the arrow of timemust be an "emergent" phenomenon, perhaps explained by a statistical understanding of thermodynamicentropy.

Common sense tells us that objectspersistacross time, that there is some sense in which you are the sameperson you were yesterday, in which the oak is the same as the acorn, in which you perhaps even can stepinto the same river twice. Philosophers have developed two rival theories for how this happens, called"endurantism" and "perdurantism". Broadly speaking, endurantists hold that a whole object exists at each

moment of its history, and the same object exists at each moment. Perdurantists believe that objects arefour-dimensional entities made up of a series of temporal parts like the frames of a movie.

The Nature of Metaphysics

The phenomena into which metaphysics enquires are puzzling; that's why metaphysicians enquire intothem. Yet the attempt to enquire into those phenomena can also seem puzzling. Take change over time.Objects are continually changing before our very eyes: it is hard to see how anything about the processcould remain mysterious, or what more we could learn about change to dispel any mystery remaining. Thi

puzzlement is apt to generate reflection on the nature of metaphysics itself: that is, metametaphysical
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reflection. Does metaphysics discover truths? If so, what does most of the work in making metaphysicaldiscoveries true: the way the world is, or the way we use language? If not, is it because there simply are notruths of the sort the metaphysician seeks, or is it because there is no reliable method of finding them?Some philosophers, such as Amie Thomasson, have argued that many metaphysical questions can bedissolved just by looking at the way we use words; others, such as Ted Sider, have argued that metaphysicquestions are substantive, and that we can make progress towards answering them by comparing theoriesaccording to a range of theoretical virtues inspired by the sciences, such as simplicity and explanatory

power.

[14]

Styles and methods of metaphysics

Rationalversus empirical. Rationalism is a method or a theory "in which the criterion of the truth i

not sensory but intellectual and deductive" (Bourke 263). Rationalist metaphysicians aim to deduce

the nature of reality by armchair, a priorireasoning. Empiricism holds that the senses are the primar

source of knowledge about the world.

Piecemealversus systematic. The "system building" style of metaphysics attempts to answer allthe

important questions in a comprehensive and coherent way, providing a theory of everything or

complete picture of the world. The contrasting approach is to deal with problems one at a time.[15]

Dogmaticversus critical. Under the scholastic approach of the Middle Ages, a number of themes

and ideas were not open to be challenged. Kant and others thought this "dogmatism" should be

replaced by a critical approach.

Individualversus collective. Scholasticism and Analytical philosophy are examples of collaborative

approaches to philosophy. Many other philosophers expounded individual visions.

Sparseversus abundant. Should a metaphysical system posit very little, for the sake of simplicity, very much, to capture more insights than would otherwise be possible?

Descriptiveversus revisionary. Peter Strawson makes the distinction between descriptive

metaphysics, which sets out to investigate our deepest assumptions, and revisionary metaphysics,

which sets out to improve or rectify them.[16]

History and schools of metaphysics

Pre-Socratic metaphysics in Greece

The first known philosopher, according to Aristotle, is Thales of Miletus. Rejecting mythological anddivine explanations, he sought a single first cause orArche(origin or beginning) under which all

phenomena could be explained, and concluded that this first cause was in fact moisture or water. Thalesalso taught that the world is harmonious, has a harmonious structure, and thus is intelligible to rationalunderstanding. Other Miletians, such as Anaximander and Anaximenes, also had a monistic conception ofthe first cause.
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Another school was the Eleatics, Italy. The group was founded in the early fifth century BCE byParmenides, and included Zeno of Elea and Melissus of Samos. Methodologically, the Eleatics were

broadly rationalist, and took logical standards of clarity and necessity to be the criteria of truth. Parmenidechief doctrine was that reality is a single unchanging and universal Being. Zeno used reductio ad absurdumto demonstrate the illusory nature of change and time in his paradoxes.

Heraclitus of Ephesus, in contrast, made change central, teaching that "all things flow". His philosophy,expressed in brief aphorisms, is quite cryptic. For instance, he also taught the unity of opposites.

Democritus and his teacher Leucippus, are known for formulating an atomic theory for the cosmos.[17]

They are considered forerunners of the scientific method.

Socrates and Plato

Socrates is known for his dialectic or questioning approach to philosophy rather than a positivemetaphysical doctrine.

His pupil, Plato is famous for his theory of forms (which he confusingly places in the mouth of Socrates in

the dialogues he wrote to expound it). Platonic realism (also considered a form of idealism[18]) isconsidered to be a solution to the problem of universals; i.e., what particular objects have in common is ththey share a specific Form which is universal to all others of their respective kind.

The theory has a number of other aspects:

Epistemological: knowledge of the Forms is more certain than mere sensory data.

Ethical: The Form of the Good sets an objective standard for morality.

Time and Change: The world of the Forms is eternal and unchanging. Time and change belong only

to the lower sensory world. "Time is a moving image of Eternity".Abstract objects and mathematics: Numbers, geometrical figures, etc., exist mind-independently in

the World of Forms.

Platonism developed into Neoplatonism, a philosophy with a monotheistic and mystical flavour thatsurvived well into the early Christian era.

Aristotle

Plato's pupil Aristotle wrote widely on almost every subject, including metaphysics. His solution to theproblem of universals contrasts with Plato's. Whereas Platonic Forms exist in a separate realm, and canexist uninstantiated in visible things, Aristotelean essences "indwell" in particulars.

Potentiality and Actuality[19]are principles of a dichotomy which Aristotle used throughout hisphilosophical works to analyze motion, causality and other issues.

The Aristotelean theory of change and causality stretches to four causes: the material, formal, efficient andfinal. The efficient cause corresponds to what is now known as a causesimpliciter. Final causes areexplicitly teleological, a concept now regarded as controversial in science. The Matter/Form dichotomy wa
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to become highly influential in later philosophy as the substance/essence distinction.

The opening arguments in Aristotle'sMetaphysics, Book I, revolve around the senses, knowledge,experience, theory, and wisdom. The first main focus in the Metaphysics is attempting to determine how

intellect advances from sensation through memory, experience, and art, to theoretical knowledge.[20]

Aristotle claims that eyesight provides us with the capability to recognize and remember experiences, whilsound allows us to learn.

Scholasticism and the Middle Ages

Between about 1100 and 1500, philosophy as a discipline took place as part of the Catholic church'steaching system, known as scholasticism. Scholastic philosophy took place within an establishedframework blending Christian theology with Aristotelean teachings. Although fundamental orthodoxiescould not be challenged, there were nonetheless deep metaphysical disagreements, particularly over the

problem of universals, which engaged Duns Scotus and Pierre Abelard. William of Ockham is rememberefor his principle of ontological parsimony.

Rationalism and Continental Rationalism

In the early modern period (17th and 18th centuries), the system-buildingscopeof philosophy is oftenlinked to the rationalist methodof philosophy, that is the technique of deducing the nature of the world by

pure reason. The scholastic concepts of substance and accident were employed.

Leibniz proposed in his Monadology a plurality of non-interacting substances.

Descartes is famous for his Dualism of material and mental substances.

Spinoza believed reality was a single substance of God-or-nature.

British empiricism

British empiricism marked something of a reaction to rationalist and system-building philosophy, orpeculativemetaphysics as it was pejoratively termed. The sceptic David Hume famously declared thatmost metaphysics should be consigned to the flames (see below). Hume was notorious among hiscontemporaries as one of the first philosophers to openly doubt religion, but is better known now for hiscritique of causality. John Stuart Mill, Thomas Reid and John Locke were less sceptical, embracing a morecautious style of metaphysics based on realism, common sense and science. Other philosophers, notablyGeorge Berkeley were led from empiricism to idealistic metaphysics.

Kant

Immanuel Kant attempted a grand synthesis and revision of the trends already mentioned: scholasticphilosophy, systematic metaphysics, and skeptical empiricism, not to forget the burgeoning science of hisday. Like the systems builders, he had an overarching framework in which all questions were to beaddressed. Like Hume, who famously woke him from his 'dogmatic slumbers', he was suspicious ofmetaphysical speculation, and also places much emphasis on the limitations of the human mind.
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Kant saw rationalist philosophers as aiming for a kind of metaphysical knowledge he defined as theynthetic apriorithat is knowledge that does not come from the senses (it is a priori) but is nonethelessabout reality (synthetic). Inasmuch as it is about reality, it is unlike abstract mathematical propositions(which he terms analytical apriori), and being apriori it is distinct from empirical, scientific knowledge(which he terms synthetic aposteriori). The only synthetic apriori knowledge we can have is of how ourminds organise the data of the senses; that organising framework is space and time, which for Kant have nmind-independent existence, but nonetheless operate uniformly in all humans. Apriori knowledge of spaceand time is all that remains of metaphysics as traditionally conceived. There isa reality beyond sensory daor phenomena, which he calls the realm of noumena; however, we cannot know it as it is in itself, but onlyas it appears to us. He allows himself to speculate that the origins of God, morality, and free will mightexiin the noumenal realm, but these possibilities have to be set against its basic unknowability for humans.Although he saw himself as having disposed of metaphysics, in a sense, he has generally been regarded inretrospect as having a metaphysics of his own.

19th Century philosophy was overwhelmingly influenced by Kant and his successors. Schopenhauer,Schelling, Fichte and Hegel all purveyed their own panoramic versions of German Idealism, Kant's owncaution about metaphysical speculation, and refutation of idealism, having fallen by the wayside. Theidealistic impulse continued into the early 20th century with British idealists such as F. H. Bradley and J.

M. E. McTaggart.

Followers of Karl Marx took Hegel's dialectic view of history and re-fashioned it as materialism.

Early analytical philosophy and positivism

During the period when idealism was dominant in philosophy, science had been making great advances.The arrival of a new generation of scientifically minded philosophers led to a sharp decline in the populariof idealism during the 1920s.

Analytical philosophy was spearheaded by Bertrand Russell and G. E. Moore. Russell and William Jamestried to compromise between idealism and materialism with the theory of neutral monism.

The early to mid 20th century philosophy also saw a trend to reject metaphysical questions as meaninglessThe driving force behind this tendency was the philosophy of Logical Positivism as espoused by the ViennCircle.

At around the same time, the American pragmatists were steering a middle course between materialism anidealism. System-building metaphysics, with a fresh inspiration from science, was revived by A. N.Whitehead and Charles Hartshorne.

Continental philosophy

The forces that shaped analytical philosophythe break with idealism, and the influence of science were much less significant outside the English speaking world, although there was a shared turn towardlanguage. Continental philosophy continued in a trajectory from post Kantianism.

The phenomenology of Husserl and others was intended as a collaborative project for the investigation ofthe features and structure of consciousness common to all humans, in line with Kant's basing his syntheticapriori on the uniform operation of consciousness. It was officially neutral with regards to ontology, but
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was nonetheless to spawn a number of metaphysical systems. Brentano's concept of intentionality wouldbecome widely influential, including on analytical philosophy.

Heidegger, author of Being and Time, saw himself as re-focusing on Being-qua-being, introducing thenovel concept ofDaseinin the process. Classing himself an existentialist, Sartre wrote an extensive studyofBeing and Nothingness.

The speculative realism movement marks a return to full blooded realism.

Process Metaphysics

There are two fundamental aspects of everyday experience: change and persistence. Until recently, theWestern philosophical tradition has arguably championed substance and persistence, with some notableexceptions however. According to process thinkers, novelty, flux and accident do matter, and sometimesthey constitute the ultimate reality.

Lato sensu, process metaphysics is as old as Western philosophy, with figures such as Heraclitus, PlotinusDuns Scotus, Leibniz, David Hume, Georg Wilhelm Friedrich Hegel, Friedrich Wilhelm Joseph von

Schelling, Gustav Theodor Fechner, Friedrich Adolf Trendelenburg, Charles Renouvier, Karl Marx, ErnstMach, Friedrich Wilhelm Nietzsche, mile Boutroux, Henri Bergson, Samuel Alexander and NicolasBerdyaev. It seemingly remains an open question whether major Continental figures like the late MartinHeidegger, Maurice Merleau-Ponty, Gilles Deleuze, Michel Foucault, or Jacques Derrida should be

included.[21]

Stricto sensu, process metaphysics can be limited to the works of a few founding fathers : G. W. F. Hegel,Charles Sanders Peirce, William James, Henri Bergson, A. N. Whitehead and John Dewey. From aEuropean perspective, there was a very significant and early Whiteheadian influence on the works ofoutstanding scholars like mile Meyerson (18591933), Louis Couturat (18681914), Jean Wahl (1888

1974), Robin George Collingwood (18891943), Philippe Devaux (19021979), Hans Jonas (19031993),Dorothy M. Emmett (19042000), Maurice Merleau Ponty (19081961), Enzo Paci (19111976), CharlieDunbar Broad (18871971), Wolfe Mays (1912), Ilya Prigogine (19172003), Jules Vuillemin (19202001), Jean Ladrire (1921), Gilles Deleuze (19251995), Wolfhart Pannenberg (1928) and Reiner Wie

(19292010).[22]

Later analytical philosophy

While early analytic philosophy tended to reject metaphysical theorizing, under the influence of logicalpositivism, it was revived in the second half of the twentieth century. Philosophers such as David K. Lewi

and David Armstrong developed elaborate theories on a range of topics such as universals, causation,possibility and necessity and abstract objects. However, the focus of analytical philosophy is generallyaway from the construction of all-encompassing systems and towards close analysis of individual ideas.

Among the developments that led to the revival of metaphysical theorizing were Quine's attack on theanalytic-synthetic distinction, which was generally taken to undermine Carnap's distinction between

existence questions internal to a framework and those external to it.[23]
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The philosophy of fiction, the problem of empty names, and the debate over existence's status as a propertyhave all risen out of relative obscurity to become central concerns, while perennial issues such as free will

possible worlds, and the philosophy of time have had new life breathed into them.[24][25]

Rejections of metaphysics

A number of individuals have suggested that much of metaphysics should be rejected. In the 18th century,

David Hume took an extreme position, arguing that all genuine knowledge involves either mathematics ormatters of fact and that metaphysics, which goes beyond these, is worthless. He concludes hisEnquiryConcerning Human Understandingwith the statement:

If we take in our hand any volume; of divinity or school metaphysics, for instance; let us ask,

Does it contain any abstract reasoning concerning quantity or number?No.Does it contain

any experimental reasoning concerning matter of fact and existence?No. Commit it then to th

flames: for it can contain nothing but sophistry and illusion.[26]

In the 1930s, A. J. Ayer and Rudolf Carnap endorsed Hume's position; Carnap quoted the passageabove.[27]They argued that metaphysical statements are neither true nor false but meaningless since,according to their verifiability theory of meaning, a statement is meaningful only if there can be empiricalevidence for or against it. Thus, while Ayer rejected the monism of Spinoza, noted above, he avoided a

commitment to pluralism, the contrary position, by holding both views to be without meaning.[28]Carnap

took a similar line with the controversy over the reality of the external world.[29]

33 years after Hume'sEnquiryappeared, Immanuel Kant published his Critique of Pure Reason. Though hfollowed Hume in rejecting much of previous metaphysics, he argued that there was still room for some

ynthetic a prioriknowledge, concerned with matters of fact yet obtainable independent of experience.These included fundamental structures of space, time, and causality. He also argued for the freedom of thewill and the existence of "things in themselves", the ultimate (but unknowable) objects of experience.

The logical atomist Ludwig Wittgenstein introduced the concept that metaphysics could be influenced by

theories of Aesthetics, via Logic, vis. a world composed of "atomical facts".[30][31]

Arguing against such rejections, the Scholastic philosopher Edward Feser has observed that Humes

critique of metaphysics, and specifically Hume's fork, is notoriously self-refuting.[32]Feser argues thatHumes fork itself is not a conceptual truth and is not empirically testable.

Metaphysics in science

Much recent work has been devoted to analyzing the role of metaphysics in scientific theorizing. AlexandrKoyr led this movement, declaring in his bookMetaphysics and Measurement, "It is not by following

experiment, but by outstripping experiment, that the scientific mind makes progress."[33]Imre Lakatosmaintained that all scientific theories have a metaphysical "hard core" essential for the generation of

hypotheses and theoretical assumptions.[34]Thus, according to Lakatos, "scientific changes are connected

with vast cataclysmic metaphysical revolutions."[35]
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An example from biology of Lakatos' thesis: David Hull has argued that changes in the ontological status othe species concept have been central in the development of biological thought from Aristotle throughCuvier, Lamarck, and Darwin. Darwin's ignorance of metaphysics made it more difficult for him to responto his critics because he could not readily grasp the ways in which their underlying metaphysical views

differed from his own.[36]

In physics, new metaphysical ideas have arisen in connection with quantum mechanics, where subatomicparticles arguably do not have the same sort of individuality as the particulars with which philosophy has

traditionally been concerned.[37]Also, adherence to a deterministic metaphysics in the face of the challengposed by the quantum-mechanical uncertainty principle led physicists like Albert Einstein to propose

alternative theories that retained determinism.[38]A. N. Whitehead is famous for creating a metaphysics

inspired by electromagnetism and special relativity.[39]

In chemistry, Gilbert Newton Lewis addressed the nature of motion, arguing that an electron should not be

said to move when it has none of the properties of motion.[40]

Katherine Hawley notes that the metaphysics even of a widely accepted scientific theory may be challenge

if it can be argued that the metaphysical presuppositions of the theory make no contribution to its predictivsuccess.[41]

See also

Concerning existence of material things, and real distinction between mind and body (Descartes)

Epistemology

Essence

LogicMetaphilosophy

Metaethics

Mindbody problem

Nihilism

Ontology

Personal identity

Philosophical logic

Philosophical realismPhilosophical theology

Philosophy of Mathematics

Philosophy of physics

Pluralism (philosophy of mind)

Process philosophy

Substance theory
http://en.wikipedia.org/wiki/Substance_theoryhttp://en.wikipedia.org/wiki/Process_philosophyhttp://en.wikipedia.org/wiki/Pluralism_(philosophy_of_mind)http://en.wikipedia.org/wiki/Philosophy_of_physicshttp://en.wikipedia.org/wiki/Philosophy_of_Mathematicshttp://en.wikipedia.org/wiki/Philosophical_theologyhttp://en.wikipedia.org/wiki/Philosophical_realismhttp://en.wikipedia.org/wiki/Philosophical_logichttp://en.wikipedia.org/wiki/Personal_identityhttp://en.wikipedia.org/wiki/Ontologyhttp://en.wikipedia.org/wiki/Nihilismhttp://en.wikipedia.org/wiki/Mind%E2%80%93body_problemhttp://en.wikipedia.org/wiki/Metaethicshttp://en.wikipedia.org/wiki/Metaphilosophyhttp://en.wikipedia.org/wiki/Logichttp://en.wikipedia.org/wiki/Essencehttp://en.wikipedia.org/wiki/Epistemologyhttp://en.wikipedia.org/wiki/Meditations_on_First_Philosophy#Meditation_VI:_Concerning_the_Existence_of_Material_Things.2C_and_the_Real_Distinction_between_Mind_and_Bodyhttp://en.wikipedia.org/wiki/Gilbert_Newton_Lewishttp://en.wikipedia.org/wiki/Alfred_North_Whiteheadhttp://en.wikipedia.org/wiki/Hidden_variable_theoryhttp://en.wikipedia.org/wiki/Albert_Einsteinhttp://en.wikipedia.org/wiki/Uncertainty_principlehttp://en.wikipedia.org/wiki/Introduction_to_quantum_mechanicshttp://en.wikipedia.org/wiki/Charles_Darwinhttp://en.wikipedia.org/wiki/Jean-Baptiste_Lamarckhttp://en.wikipedia.org/wiki/Georges_Cuvierhttp://en.wikipedia.org/wiki/Aristotlehttp://en.wikipedia.org/wiki/David_Hull


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Notes and references

1. Geisler, Norman L. "Baker Encyclopedia of Christian Apologetics" page 446. Baker Books, 1999.

2. Metaphysics (Stanford Encyclopedia of Philosophy) (http://plato.stanford.edu/entries/metaphysics/).

3. What is it (that is, whatever it is that there is) like? Hall, Ned (2012). "David Lewis's Metaphysics"

(http://plato.stanford.edu/archives/fall2012/entries/lewis-metaphysics/). In Edward N. Zalta (ed). The Stanford

Encyclopedia of Philosophy(Fall 2012 ed.). Center for the Study of Language and Information, Stanford

University. Retrieved October 5, 2012.

4. Random House Dictionary Online (http://dictionary.reference.com/browse/metaphysicist) metaphysicist

5. Random House Dictionary Online (http://dictionary.reference.com/browse/metaphysician) metaphysician

6. Peter Gay, The Enlightenment, vol. 1 (The Rise of Modern Paganism), Chapter 3, Section II, pp. 132141.

7. In the English language, the word comes by way of the Medieval Latin metaphysica, the neuter plural of

Medieval Greek metaphysika.[1] (http://www.etymonline.com/index.php?term=metaphysics) Various dictionarie

trace its first appearance in English to the mid-sixteenth century, although in some cases as early as 1387.[2]

(http://dictionary.reference.com/search?q=me)

8. "Metaphysics". Catholic Encyclopedia. New York: Robert Appleton Company. 1913.9. This question is discussed in details in one of the latest publications on this topic, see: Nader El-Bizri, 'Avicenn

and Essentialism',Review of Metaphysics54 (2001), pp. 753778

10. Muir, John W. (1968). "The definition of taxa" (http://sysbio.oxfordjournals.org/content/17/3/345.1.extract).

Systematic Biology17(3): 345. doi:10.1093/sysbio/17.3.345

(https://dx.doi.org/10.1093%2Fsysbio%2F17.3.345).

11. "Replacement of an Essentialistic Perspective on Taxonomic Definitions as Exemplified by the Definition of

"Mammalia"" (http://vertebrates.si.edu/herps/herps_pdfs/deQueiroz_pdfs/1994deQSB.pdf). Systematic Biology

43 (4): 497510. 1994. doi:10.1093/sysbio/43.4.497 (https://dx.doi.org/10.1093%2Fsysbio%2F43.4.497).

12. Nicholas Rescher (2006). "Metaphysics: The Key Issues from a Realistic Perspective"

(http://www.prometheusbooks.com). ISBN 978-1591023722. Retrieved November 2, 2012.

13. Blum, Paul Richard (2010).Philosophy of the Religion in the Renaissance. Surrey, England: Ashgate Publishin

Limited. p. 89. ISBN 978-0-7546-0781-6.

14. Chalmers, David; Manley, David; Wasserman, Ryan (2009). Metametaphysics. Oxford University Press.

15. Lewis, David (1983).Philosophical Papers.

16. Oxford Companion to Philosophy

17. Barnes (1987).

18. As universals were considered by Plato to be ideal forms, this stance is confusingly also called Platonic idealism

This should not be confused with Idealism, as presented by philosophers such as Immanuel Kant: as Platonic

abstractions are not spatial, temporal, or mental they are not compatible with the later Idealism's emphasis on

mental existence.

19. The words "potentiality" and "actuality" are one set of translations from the original Greek terms of Aristotle.

Other translations (including Latin) and alternative Greek terms are sometimes used in scholarly work on the

subject.

20. McKeon, R. (1941). Metaphysics. In The Basic Works of Aristotle (p. 682). New York: Random House.

21. Cf. Michel Weber (ed.), After Whitehead: Rescher on Process Metaphysics
https://chromatika.academia.edu/MichelWeberhttps://chromatika.academia.edu/MichelWeberhttp://en.wikipedia.org/wiki/Michel_Weberhttp://en.wikipedia.org/wiki/Abstractionhttp://en.wikipedia.org/wiki/Immanuel_Kanthttp://en.wikipedia.org/wiki/Philosophical_idealismhttp://en.wikipedia.org/wiki/Platonic_idealismhttp://en.wikipedia.org/wiki/Theory_of_Formshttp://en.wikipedia.org/wiki/Special:BookSources/978-0-7546-0781-6http://en.wikipedia.org/wiki/International_Standard_Book_Numberhttp://en.wikipedia.org/wiki/Special:BookSources/978-1591023722http://en.wikipedia.org/wiki/International_Standard_Book_Numberhttp://www.prometheusbooks.com/http://en.wikipedia.org/wiki/Nicholas_Rescherhttp://dx.doi.org/10.1093%2Fsysbio%2F43.4.497http://en.wikipedia.org/wiki/Digital_object_identifierhttp://vertebrates.si.edu/herps/herps_pdfs/deQueiroz_pdfs/1994deQSB.pdfhttp://dx.doi.org/10.1093%2Fsysbio%2F17.3.345http://en.wikipedia.org/wiki/Digital_object_identifierhttp://sysbio.oxfordjournals.org/content/17/3/345.1.extracthttp://en.wikipedia.org/wiki/Nader_El-Bizrihttp://en.wikipedia.org/wiki/Catholic_Encyclopediahttp://en.wikisource.org/wiki/Catholic_Encyclopedia_(1913)/Metaphysicshttp://dictionary.reference.com/search?q=mehttp://www.etymonline.com/index.php?term=metaphysicshttp://en.wikipedia.org/wiki/Medieval_Greekhttp://en.wikipedia.org/wiki/Medieval_Latinhttp://dictionary.reference.com/browse/metaphysicianhttp://dictionary.reference.com/browse/metaphysicisthttp://plato.stanford.edu/archives/fall2012/entries/lewis-metaphysics/http://plato.stanford.edu/entries/metaphysics/http://en.wikipedia.org/wiki/Norman_Geisler


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(https://chromatika.academia.edu/MichelWeber), Frankfurt / Paris / Lancaster, ontos verlag, 2004, p. 46.

22. Cf. Michel Weber (ed.), After Whitehead: Rescher on Process Metaphysics

(https://chromatika.academia.edu/MichelWeber), Frankfurt / Paris / Lancaster, ontos verlag, 2004, p. 45.

23. S. Yablo and A. Gallois, "Does Ontology Rest on a Mistake?", Proceedings of the Aristotelian Society,

Supplementary Volumes, Vol. 72, (1998), pp. 229261, 263283 first part

(http://www.mit.edu/%7Eyablo/om.pdf)

24. Everett, Anthony and Thomas Hofweber (eds.) (2000), Empty Names, Fiction and the Puzzles of Non-Existence

25. Van Inwagen, Peter, and Dean Zimmerman (eds.) (1998), Metaphysics: The Big Questions.

26. Hume, David (1748). An Enquiry Concerning Human Understanding

(http://www.infidels.org/library/historical/david_hume/human_understanding.html). 132.

27. Carnap, Rudolf (1935). "Philosophy and Logical Syntax" (http://philosophy.ru/edu/ref/sci/carnap.html).

Retrieved September 2, 2012. |chapter=ignored (help)

28. Ayer, A. J. (1936). Language, Truth and Logic

(http://ia600306.us.archive.org/15/items/AlfredAyer/LanguageTruthAndLogic_text.pdf). Victor Gollantz. p. 22.

29. Carnap, Rudolf (1928).Der Logische Aufbau der Welt. Trans. 1967 by Rolf A. George as The Logical Structur

of the World. University of California Press. pp. 333f. ISBN 0-520-01417-0.30. Wittgenstein, Ludwig (1922), Tractatus Logico-Philosophicus(http://www.gutenberg.org/ebooks/5740)

31. Wittgenstein, Ludwig. "Tractatus Logico-Philosophicus". Major Works: Selected Philosophical Writings. Harp

Perennial Modern Classics, 2009.

32. Feser, Edward (2014). Scholastic Metaphysics: A Contemporary Introduction. p. 302. ISBN 978-3-86838-544-

33. Koyr, Alexandre (1968). Metaphysics and Measurement. Harvard University Press. p. 80.

34. Brekke, John S. (1986). "Scientific Imperatives in Social Work Research: Pluralism Is Not Skepticism". Social

Service Review60(4): 538554. doi:10.1086/644398 (https://dx.doi.org/10.1086%2F644398).

35. Lakatos, Imre (1970). "Science: reason or religion" (http://www.inf.fu-berlin.de/lehre/pmo/eng/Lakatos-

Falsification.pdf). Section 1 of "Falsification and the methodology of scientific research programs" in ImreLakatos & Alan Musgrave, Criticism and the Growth of Knowledge. Cambridge University Press. ISBN 0-521-

07826-1.

36. Hull, David (1967). "The Metaphysics of Evolution".British Journal for the History of Science3(4): 309337

doi:10.1017/s0007087400002892 (https://dx.doi.org/10.1017%2Fs0007087400002892).

37. Arenhart, Jonas R. B. (2012). "Ontological frameworks for scientific theories". Foundations of Science17(4).

doi:10.1007/s10699-012-9288-5 (https://dx.doi.org/10.1007%2Fs10699-012-9288-5).

38. Hawking, Stephen (1999). "Does God play dice?" (http://www.hawking.org.uk/does-god-play-dice.html).

Retrieved September 2, 2012.

39. See, e.g., Ronny Desmet and Michel Weber (edited by), Whitehead. The Algebra of Metaphysics. Applied

Process Metaphysics Summer Institute Memorandum

(https://www.academia.edu/279940/Whitehead._The_Algebra_of_Metaphysics) , Louvain-la-Neuve, ditions

Chromatika, 2010 (ISBN 978-2-930517-08-7).

40. Rodebush, Worth H. (1929). "The electron theory of valence". Chemical Reviews(American Chemical Society)

(4): 509531. doi:10.1021/cr60020a007 (https://dx.doi.org/10.1021%2Fcr60020a007).

41. Hawley, Katherine (2006). "Science as a Guide to Metaphysics?" (http://www.st-

andrews.ac.uk/~kjh5/OnlinePapers/ScienceAsAGuideToMetaphysics.pdf). Synthese(Springer Netherlands) 149
https://chromatika.academia.edu/MichelWeberhttp://www.st-andrews.ac.uk/~kjh5/OnlinePapers/ScienceAsAGuideToMetaphysics.pdfhttp://dx.doi.org/10.1021%2Fcr60020a007http://en.wikipedia.org/wiki/Digital_object_identifierhttp://en.wikipedia.org/wiki/Special:BookSources/9782930517087https://www.academia.edu/279940/Whitehead._The_Algebra_of_Metaphysicshttp://www.hawking.org.uk/does-god-play-dice.htmlhttp://en.wikipedia.org/wiki/Stephen_Hawkinghttp://dx.doi.org/10.1007%2Fs10699-012-9288-5http://en.wikipedia.org/wiki/Digital_object_identifierhttp://dx.doi.org/10.1017%2Fs0007087400002892http://en.wikipedia.org/wiki/Digital_object_identifierhttp://en.wikipedia.org/wiki/David_Hullhttp://en.wikipedia.org/wiki/Special:BookSources/0521078261http://www.inf.fu-berlin.de/lehre/pmo/eng/Lakatos-Falsification.pdfhttp://en.wikipedia.org/wiki/Imre_Lakatoshttp://dx.doi.org/10.1086%2F644398http://en.wikipedia.org/wiki/Digital_object_identifierhttp://en.wikipedia.org/wiki/Special:BookSources/978-3-86838-544-1http://en.wikipedia.org/wiki/International_Standard_Book_Numberhttp://www.gutenberg.org/ebooks/5740http://en.wikipedia.org/wiki/Ludwig_Wittgensteinhttp://en.wikipedia.org/wiki/Special:BookSources/0-520-01417-0http://en.wikipedia.org/wiki/International_Standard_Book_Numberhttp://en.wikipedia.org/wiki/Rudolf_Carnaphttp://ia600306.us.archive.org/15/items/AlfredAyer/LanguageTruthAndLogic_text.pdfhttp://en.wikipedia.org/wiki/A._J._Ayerhttp://en.wikipedia.org/wiki/Help:CS1_errors#chapter_ignoredhttp://philosophy.ru/edu/ref/sci/carnap.htmlhttp://en.wikipedia.org/wiki/Rudolf_Carnaphttp://www.infidels.org/library/historical/david_hume/human_understanding.htmlhttp://en.wikipedia.org/wiki/David_Humehttp://www.mit.edu/~yablo/om.pdfhttps://chromatika.academia.edu/MichelWeberhttp://en.wikipedia.org/wiki/Michel_Weberhttps://chromatika.academia.edu/MichelWeber


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(3): 451470. doi:10.1007/s11229-005-0569-1 (https://dx.doi.org/10.1007%2Fs11229-005-0569-1). ISSN 0039-

7857 (https://www.worldcat.org/issn/0039-7857).

Bibliography

Assiter, Alison (2009).Kierkegaard, metaphysics and political theory unfinished selves. London Ne

York: Continuum International Publishing Group. ISBN 9780826498311.Butchvarov, Panayot (1979).Being Qua Being: A Theory of Identity, Existence and Predication.

Bloomington and London: Indiana University Press.

Gale, Richard M. (2002). The Blackwell Guide to Metaphysics. Oxford: Blackwell.

Gay, Peter. (1966). The Enlightenment: An Interpretation(2 vols.). New York: W. W. Norton &

Company.

Harris, E. E. (1965). The Foundations of Metaphysics in Science. London: George Allen and Unwin

Harris, E. E. (2000). The Restitution of Metaphysics. New York: Humanity Books.

Heisenberg, Werner (1958), "Atomic Physics and Causal Law," from The Physicist's Conception of

Nature

Kant, I (1781). Critique of Pure Reason.

Kim, J. and Ernest Sosa Ed. (1999).Metaphysics: An Anthology. Blackwell Philosophy Anthologies

Kim, J. and Ernest Sosa, Ed. (2000).A Companion to Metaphysics. Malden Massachusetts,

Blackwell, Publishers.

Koons, Robert C. and Pickavance, Timothy H. (2015),Metaphysics: The Fundamentals. Wiley-

Blackwell.

Le Poidevin R. & al. Ed. (2009). The Routledge Companion to Metaphysics. New York, Routledge.

Loux, M. J. (2006).Metaphysics: A Contemporary Introduction(3rd ed.). London: Routledge.

Lowe, E. J. (2002).A Survey of Metaphysics. Oxford: Oxford University Press.

Macdonald, S and Congreve, J (2014), "Metaphysics: Explained!", London.

Further reading

The London Philosophy Study Guide (http://www.ucl.ac.uk/philosophy/LPSG/) offers many

suggestions on what to read, depending on the student's familiarity with the subject: Logic &

Metaphysics (http://www.ucl.ac.uk/philosophy/LPSG/L&M.htm).

External links

Metaphysics (http://philpapers.org/browse/metaphysics) at PhilPapers

Metaphysics (https://inpho.cogs.indiana.edu/taxonomy/2350) at the Indiana Philosophy Ontology
http://en.wikipedia.org/wiki/Indiana_Philosophy_Ontology_Projecthttp://en.wikipedia.org/wiki/Indiana_Philosophy_Ontology_Projecthttps://inpho.cogs.indiana.edu/taxonomy/2350http://en.wikipedia.org/wiki/PhilPapershttp://philpapers.org/browse/metaphysicshttp://www.ucl.ac.uk/philosophy/LPSG/L&M.htmhttp://www.ucl.ac.uk/philosophy/LPSG/http://en.wikipedia.org/wiki/Robert_Koonshttp://en.wikipedia.org/wiki/Ernest_Sosahttp://en.wikipedia.org/wiki/Ernest_Sosahttp://en.wikipedia.org/wiki/Critique_of_Pure_Reasonhttp://en.wikipedia.org/wiki/Immanuel_Kanthttp://en.wikipedia.org/wiki/Panayot_Butchvarovhttp://en.wikipedia.org/wiki/Special:BookSources/9780826498311http://en.wikipedia.org/wiki/International_Standard_Book_Numberhttp://www.worldcat.org/issn/0039-7857http://en.wikipedia.org/wiki/International_Standard_Serial_Numberhttp://dx.doi.org/10.1007%2Fs11229-005-0569-1http://en.wikipedia.org/wiki/Digital_object_identifier


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Project

Metaphysics (http://plato.stanford.edu/entries/metaphysics) entry by Peter van Inwagen in the

Stanford Encyclopedia of Philosophy

Metaphysics (http://www.iep.utm.edu/category/m-and-e/metaphysics/) entry in theInternet

Encyclopedia of Philosophy

Metaphysics (http://www.britannica.com/EBchecked/topic/377923/metaphysics) at Encyclopdia

Britannica

The Metaphysics of Origin by A.D. Toms

(https://sites.google.com/site/themetaphysicsoforigin/home/)

Retrieved from "http://en.wikipedia.org/w/index.php?title=Metaphysics&oldid=652044466"

Categories: Metaphysics Branches of philosophy

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