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What are the major branches of philosophy?

(For instance, as a first-order approximation, mathematics can be sub-divided into three main categories at the first level: Analysis, Algebra, and Geometry.)

What are the first few books that every person attempting to "learn" these areas of philosophy at an undergraduate level read?

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Western Philosophy? or Eastern or both? –  Chris S Jun 8 '11 at 9:37
    
I think the mathematicians will dispute your overly simplistic division of their subject. See for example the tags at MathOverflow mathoverflow.net/tags, which are meant to be fairly coarse groupings. Many of their topics don't fit easily into your trichotomy. –  JDH Jun 21 '11 at 18:02
    
@JDH: True. Probably if I include logic it will at-least be a very crude first order approximation of the main branches of mathematics. –  user16 Jun 21 '11 at 18:46
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The most important branch of philosophy is engineering. Agriculture is probably the most important branch of engineering. –  mwengler Jun 27 '12 at 17:09
    
I learned that the three major branches of phil are speculative,practical nd logic.hw true is dat? –  user2867 Dec 19 '12 at 19:00
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6 Answers

The traditional branches of philosophy generally include

  • Aesthetics
  • Epistemology
  • Ethics
  • Logic
  • Metaphysics
  • Ontology

We can go ahead and add a few major modern branches on to this (more examples could certainly be adduced):

  • Philosophy of Mind
  • Philosophy of Politics (Society, etc.)
  • Philosophy of Science (Mathematics, Technology, etc.)
  • Philosophy of Religion
  • Philosophy of Value (Axiology)
  • Philosophy of Language

In addition, we could add many schools and movements (again, more examples could certainly be added):

  • Phenomenology (Husserl)
  • Schizoanalysis (Gilles Deleuze and Felix Guattari)
  • Chaosophy (Felix Guattari)
  • Non-philosophy (Francois Laruelle)
  • Existentialism (Sartre, et al.)

Finally, we can also consider the history of philosophy itself as constituting a series of fruitful conjunctions of cultures and eras where ideas were changing. The structure here is taken from Wikipedia's article on the History of Philosophy:

  • Western philosophy
    • Ancient philosophy
    • Medieval philosophy
    • Renaissance philosophy
    • Modern philosophy
    • Contemporary philosophy
  • Eastern philosophy
    • Babylonian philosophy
    • Indian philosophy
    • Persian philosophy
    • Chinese philosophy
    • Buddhist philosophy
  • Abrahamic philosophy
    • Jewish philosophy
    • Christian philosophy
    • Islamic philosophy
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+1 - That covers it quite well. As for saying which of these is the "most important" - we shouldn't go there. –  boehj Jun 11 '11 at 23:00
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I think you should add meta-ethics to the list of "modern" branches. And metaphysics and ontology are more or less the same thing, surely? –  Seamus Jun 20 '11 at 12:22
    
You should add Philosophy of Language in the list of major modern branches. (There are tenured positions in it.) –  Eric '3ToedSloth' Apr 11 '13 at 19:13
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I believe that following list will cover the main areas of Philosophy:

Metaphysics (Study of Existence - What's out there?)

Epistemology (Study of Knowledge - How do I know about it?)

Ethics (Study of Action - What should I do?)

Politics (Study of Force - What actions are permissible?)

Aesthetics (Study of Art - What can life be like?)

Apparently there is a philosophy of logic and philosophical logic which do differ.

Philosophy of logic is the arena of philosophy devoted to examining the scope and nature of logic.

Philosophy of logic is the investigation, critical analysis and intellectual reflection on issues arising in logic. The field is considered to be distinct from philosophical logic.

Philosophical logic is the branch of logic concerning aspects other than or outside of formal logic.

Philosophical logic is the application of formal logical techniques to philosophical problems

Philosophy of Computer Science - is concerned with philosophical issues that arise from reflection upon the nature and practice of the academic discipline of computer science.

Philosophy of science - is concerned with the assumptions, foundations, methods and implications of science.

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Where does Logic fit in? –  user16 Jun 8 '11 at 0:51
    
@Silvaram - I am looking into it since Logic is very vast subject –  Darius Jun 8 '11 at 0:52
    
What about the philosophy of technology and the philosophy of science? –  Brian Ballsun-Stanton Jun 8 '11 at 2:41
    
@Brian - I do see their existence and as of now they are part of the main Philosophy but I wanted to keep this answer more traditional. –  Darius Jun 8 '11 at 2:53
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Nigel Warbuton (Open University lecturer of Philosophy)'s books cover the basics very well. Philosophy the Basics is the best one to cover the main areas, the books is broken down into:

  • God and ontology
  • Right and Wrong, ethics and morals
  • Politics: democracy and freedom
  • The external world: realism, am I dreaming etc.
  • Science
  • Mind and body: dualism
  • Art
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I don't think that there is a single useful non-overlapping set of branches. For instance, philosophy of mathematics and philosophy of logic are, on some views, contained within one another (on some views philosophy of logic is a branch of philosophy of mathematics, on others the containment goes the other way). Both take up issues that are also clearly within Epistemology and Metaphysics.

The way I would characterize the branches at the top level is:

  1. Metaphysics
  2. Epistemology
  3. Value Theory (includes moral and political philosophy and the philosophy of art)
  4. Philosophy of Language
  5. Philosophy of Mind
  6. Logic
  7. Philosophy of the special sciences (philosophy of mathematics, philosophy of physics, philosophy of history, etc.)

This list has a good deal of overlap, too. Metaethics arguably straddles all of the first 3; philosophy of mind overlaps with at least metaphysics, etc.

Philosophy of language seems an odd man out, but given its importance in analytic philosophy and that it cannot be comfortably subsumed under any other branch on my list, I'm stuck with the oddity.

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If we're talking analytic philosophy, I'd put phil. of language as a brother of phil. of logic. And since phil. of logic is basically inseparable from metaphysics, I'd say, broadly speaking, that phil. of language is a part of the metaphysics tree. –  boehj Jun 11 '11 at 23:59
    
Interesting, and helps to show the endeavor is fraught. As a philosopher of logic, I think of it as more epistemological than metaphysical, though it of course overlaps with both. –  vanden Jun 12 '11 at 0:12
    
Very interesting. I agree: This will be an impossible task. –  boehj Jun 12 '11 at 0:16
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being a student of this subject,i think that philosophy can be divided in major three catagories

  1. Ontology or Metaphysics
    a. Monism
    i. Idealism
    ii. Materialism
    iii. Neutralism
    b. Dualism
    c. Pluralism

  2. Epistemology
    there are two basic theories here in epistemology
    a. Rationalism
    b. Empiricism

  3. Axiology
    a. logic
    b. aesthetics
    c. ethics
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While I do think that this is reasonable, I don't see how this summary is more precise, broad or informative than the old answers. Did you check them out? Maybe you can find a way to add information you think is necessary to what has already been posted? –  iphigenie Apr 11 '13 at 20:41
    
+1 because I think you were objective and succinct, which are great values in philosophy. –  Rodrigo Mar 27 at 0:09
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The most important on our life are survival and enjoyment.

The most essential on human is awareness, and the most essential function of awareness is perceive difference. Perceive difference is the first step to support thinking activity to get knowledge to make a connection in between us and reality. Therefore the most used of it related to a branch in philosophy is studying epistemology. It help us to provide better survival.

Perceive difference can't be provided without a movement. A movement on ourselves is engaged by emotion. From emotion we can move from one feeling to another feeling. And by emotion we can feel alive, but we need rules to manage emotion to provide better interaction. Therefore another most used of it related to a branch in philosophy is studying ethics. It help us to provide better interaction to our society and our environment for better enjoyment.

Therefore the most needed for our development are epistemology and ethics.

  • Understanding to both of these deeper and deeper will lead us to better and better survival and enjoyment.

  • And further we will be able to understand other possibilities for better fairness on our life. That's what philosophers are for.

Five Branches of Philosophy

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