Philosophy by doctrine (branch of metaphysics)

Agnosticism

the nature and attributes of God are beyond the grasp of man's finite and limited mind

he nature and existence of gods is unknown and inherently unknowable due to the nature of subjective experience

Exponents

Protagoras (first)

Bertrand Russel

Atheism

the belief that gods do not exist

Many atheists tend toward secular philosophies such as Humanism and Naturalism

Exponents

5th Century B.C. philosopher Diagoras is often credited as the "first atheist" and strongly criticized all religion and mysticism

Sceptics

Atomists

David Hume began to undermine the metaphysical basis of natural theology ?atheist

Existentialism, Objectivism, Humanism, Nihilism, Logical Positivism and Marxism

Analytic Philosophy, Structuralism, Naturalism and Nominalism

Variants

New Atheism

social and political movement that began in the early 2000s in favor of atheism and secularism

"Four Horsemen of the Non-Apocalypse": Richard Dawkins (1941 - ), Christopher Hitchens (1949 - 2011), Sam Harris (1967 - ) and Daniel Dennett (1942 - )

"religion should not simply be tolerated but should be countered, criticized and exposed by rational argument wherever its influence arises"

Arguements

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Epistemological arguments

people cannot know God or determine the existence of God

Kant

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Skepticism

Logical positivism

asserts the meaninglessness or unintelligibility of basic terms such as "God"

Metaphysical arguments

physicalism

Psychological, sociological and economical arguments

Marxists

Anarchists

Psychologists

Archetypal modallng

Logical and evidential

ascribed logically inconsistent qualities

theodicy

Anthropocentric arguments

favours humanity as the absolute source of ethics and values

Atomism

all of reality and all the objects in the universe are composed of very small, indivisible and indestructible building blocks known as atoms (from the Greek "atomos", meaning "uncuttable")

essentially a form of materialism/physicalism

Founder

Democritus

Counter argument

Aristotle asserted that the elements of fire, air, earth, and water were not made of atoms, but were continuous. He considered the existence of a void, which was required by atomic theories, to violate physical principles, and speculated that change took place not by the rearrangement of atoms to make new structures, but by transformation of matter from what it was in potential to a new actuality.

Proponents

Boyle

Descartes

Corpuscularism

everything physical in the universe is made of tiny “corpuscles”

Differs from atomism in terms of no void + inclusion of cartesian dualism

John Dalton (1766 - 1844)

Atomic theory

Deism

a form of Monotheism in which it is believed that one God exists, but that this God does not intervene in the world

a non-interventionist creator who permits the universe to run itself according to natural laws

derives the existence and nature of God from reason and personal experience

a natural religion as contrasted with one that is revealed by a God or which is artificially created by humans

do not view God as an entity in human form; they believe that one cannot access God through any organized religion or set of rituals, sacraments or other practices; they do not believe that God has selected a chosen people

Proponents

Heraclitus

Plato

Voltaire

Rousseau

Determinism

every event, decision and action is causally determined by an unbroken chain of prior occurrences

This does not necessarily mean that humans have no influence on the future and its events (a position more correctly known as Fatalism)

the level to which humans have influence over their future is itself dependent on present and past

Pronents

Materialism/physicalism

Deism

Interpretations

Incompatibilism

Free Will and Determinism are logically incompatible categories and therefore mutually exclusive

Hard determinism

Determinism is the reality, and therefore Free Will is an illusion

Libertarianism

Free Will is true, and therefore Determinism is not

Compatibilism

Free Will is not the ability to choose as an agent independent of prior cause, but as an agent who is not forced to make a certain choice.

Soft determinism

Newtonian mechanics

Recently challenged by the probabilistic nature of quantum mechanics

Dualism

there are two kinds of reality: material (physical) and immaterial (spiritual)

Counter views

Monism

Idealism

Physicalism

Pluralism

Mental events have a certain subjective quality to them (known as qualia or "the ways things seem to us")

Proponents

how something totally immaterial can affect something totally material (the problem of causal interaction)

Plato

Aristotle

Sankhya and Yoga schools of Hindu philosophy

Theory of Forms, distinct and immaterial substances of which the objects and other phenomena that we perceive in the world are nothing more than mere shadows

if the intellect were a specific material organ (or part of one) then it would be restricted to receiving only certain kinds of information

Neo-platonism

Christians identified Plato's Forms with souls and believed that the soul was the substance of each individual human being, while the body was just a shadow or copy of these eternal phenomena

Descartes

mind-body problem

mind with consciousness and self-awareness

brain, which was the physical seat of intelligence

the immaterial mind and the material body, while being ontologically distinct substances, causally interact in some unspecified way through the pineal gland.

Essentialism

things have essences (the attribute, or set of attributes, that make an object or substance what it fundamentally is)

Counter

Nominalism

Plato

ideal forms

Humanists

eternal and unchangeable human nature

Existentialism

emphasizes individual existence, freedom and choice

humans define their own meaning in life, and try to make rational decisions despite existing in an irrational universe

there is no God or any other transcendent force

individuals are entirely free and must take personal responsibility for themselves (although with this responsibility comes angst, a profound anguish or dread)

the only way to rise above the essentially absurd condition of humanity (which is characterized by suffering and inevitable death) is by exercising our personal freedom and choice

a reaction against traditional philosophies, such as Rationalism, Empiricism and Positivism, that seek to discover an ultimate order and universal meaning in metaphysical principles or in the structure of the observed world.

Proponents

Kierkegaard

Nietzsche

Sartre

Camus

Beauvoir

existence ("being in the world") precedes consciousness, and is the ultimate reality

Sartre put it: "At first [Man] is nothing. Only afterward will he be something, and he himself will have made what he will be."

individuals must choose their own way without the aid of universal, objective standards

the individual must decide which situations are to count as moral situations

meaning is not provided by the natural order, but rather can be created (however provisionally and unstable) by human actions and interpretations.

Connections

Written in response to Hegelianism

Inspired phenomenologists

Husserl

Heidigger

Inspired authors

Dostoyevsky

Kafka

"knight of faith", who puts complete faith in himself and in God

"Übermensch" (or "Superman") attains superiority and transcendence without resorting to the "other-worldliness" of Christianity

His discussion of ontology is rooted in an analysis of the mode of existence of individual human beings, and his analysis of authenticity and anxiety in modern culture make him very much an Existentialist in the usual modern usage.

Maurice Merleau-Ponty (1908 - 1961)

Critics

Herbert Marcuse (1898 - 1979)

for projecting some features of living in a modern oppressive society (features such as anxiety and meaninglessness) onto the nature of existence itself.

Roger Scruton (1944 - )

Heidegger's concept of inauthenticity and Sartre's concept of bad faith are both self-inconsistent, in that they deny any universal moral creed, yet speak of these concepts as if everyone is bound to abide by them.

Logical positivists

Scruton

existentialists frequently become confused over the verb "to be" (which is meaningless if used without a predicate) and by the word "nothing" (which is the negation of existence and therefore cannot be assumed to refer to something).

Marxists

counter to their emphasis on the solidarity of human beings and their theory of economic determinism

emphasis on individual choice leads to contemplation rather than to action, and that only the bourgeoisie has the luxury

Christianity

Amoral society without theological ethics

Fideism

religious belief depends on faith or revelation, rather than reason, intellect or natural theology

it objects to evidentialism, the notion that no belief should be held unless it is supported by evidence

Proponents

Pascal

Kierkegaard

Wittgenstein

William James

Abraham's willingness to sacrifice Isaac

religious discourse is essentially self-referential

Idealism

metaphysical and epistemological doctrine that ideas or thoughts make up fundamental reality

the only thing actually knowable is consciousness (or the contents of consciousness), whereas we never can be sure that matter or anything in the outside world really exists

he only real things are mental entities, not physical things (which exist only in the sense that they are perceived)

Idealism is a form of Monism, and stands in direct contrast to other Monist beliefs such as Physicalism and Materialism

It is also contrasted with Realism (which holds that things have an absolute existence prior to, and independent of, our knowledge or perceptions)

Proponents

Mahayana buddhism

Neoplatonists

Plotinus

Descartes

Epistemological idealist

Leibnitz

Panpsychism

System of monads

he external world of real objects, so that the resulting world is essentially an idea of the monads’ perception

God, the "central monad", created a pre-established harmony between the internal world in the minds of the alert monads

Berkely

knowledge must be based on our perceptions and that there was indeed no "real" knowable object behind one's perception

Kant and German school of Idealism

all we can know is the mental impressions or phenomena that an outside world creates in our minds

the mind shapes the world as we perceive it to take the form of space-and-time

the mind is not a blank slate but rather comes equipped with categories for organizing our sense impressions, even if we cannot actually approach the noumena (the "things-in-themselves") which emit or generate the phenomena (the "things-as-they-appear-to-us")

Transcendental idealism

Subjective idealism

Types

Subjective idealism (solipsism)

mind and ideas are the only things that can be definitely known to exist or have any reality, and that knowledge of anything outside the mind is unjustified

objects exist by virtue of our perception of them, as ideas residing in our awareness and in the consciousness of the Divine Being, or God

Berkeley

developed it out of the foundations of Empiricism: emphasizes the role of experience and sensory perception in the formation of ideas, while discounting the notion of innate ideas.

"To be is to be perceived or to perceive".

Berkeley further argued that it is God who causes us to experience physical objects by directly willing us to experience matter

Transcendental idealism

our experience of things is about how they appear to us (representations), not about those things as they are in and of themselves.

Kant

Fichte

Schelling

Husserl

Objective idealism

the world "out there" is in fact Mind communicating with our human minds. It postulates that there is only one perceiver, and that this perceiver is one with that which is perceived

It accepts common sense Realism (the view that independent material objects exist), but rejects Naturalism (the view that the mind and spiritual values have emerged from material things).

Schelling

Hegel

agrees with Berkeley that there is no such thing as matter in the materialist sense, and that spirit is the essence and whole of reality.

However, he argued that there is a perfect parallel between the world of nature and the structure of our awareness of it.

Although, this cannot be true of an individual ego, it can be true of an absolute consciousness. He also objected to the idea that God is separate from the world, arguing that reality is a single, absolute, all-inclusive mind, which he (and Hegel) referred to as "The Absolute Spirit" (or simply "The Absolute").

the Absolute is all of reality: no time, space, relation or event ever exists or occurs outside of it.

Hegel's system of Objective Idealism has also come under fire for merely substituting the Absolute for God, which does not make anything clearer in the end

Absolute Idealism

Hegel

Like Plato many centuries before him, Hegel argued that the exercise of reason enables the reasoner to achieve a kind of reality (namely self-determination, or "reality as oneself") that mere physical objects like rocks can never achieve.

Hegel started from Kant's position that the mind can not know "things-in-themselves", and asserted that what becomes the real is "Geist" (mind, spirit or soul), which he sees as developing through history, each period having a "Zeitgeist" (spirit of the age).

each person's individual consciousness or mind is really part of the Absolute Mind (even if the individual does not realize this), and he argued that if we understood that we were part of a greater consciousness we would not be so concerned with our individual freedom, and we would agree with to act rationally in a way that did not follow our individual caprice, thereby achieving self-fulfillment.

the interaction of opposites (or dialectics) generates all of the concepts we use in order to understand the world. This occurs both in the individual mind as well as through history. Thus, the absolute ground of being is essentially a dynamic, increasingly complex historical process of necessity that unfolds by itself, ultimately giving rise to all the diversity in the world and in the concepts with which we think and make sense of the world.

Critics

Existentialists have also criticised Hegel for ultimately choosing an essentialistic whole over the particularity of existence.

Schopenhauer objected that The Absolute is just a non-personal substitute for the concept of God.

how spirit externalizes itself and how the concepts it generates can say anything true about nature; otherwise his system becomes just an intricate game involving vacuous concept

Materialism

the only thing that can be truly proven to exist is matter

all things are composed of material and all phenomena are the result of material interactions, with no accounting of spirit or consciousness

A type of monism

in contrast to idealism

Physicalism, however, has evolved with the physical sciences to incorporate far more sophisticated notions of physicality than just matter, for example wave/particle relationships and non-material forces produced by particles

Proponents

Thales, Parmenides, Anaxagoras, Democritus, and then, later, Epicurus and Lucretius

sub types

Dialectical Materialism

the notion of a synthesis of Georg Hegel's theory of Dialectics

Marx and Engels

Historical Materialism

or human beings to survive, they need to produce and reproduce the material requirements of life, and this production is carried out through a division of labor based on very definite production relations between people. These relations form the economic base of society, and are themselves determined by the mode of production which is in force (e.g. tribal society, ancient society, feudalism, capitalism, socialism), and societies, and their cultural and institutional superstructures, naturally move from stage to stage when the dominant class is displaced by a new emerging class in a social and political upheaval.

Monism

all is one, that there are no fundamental divisions, and that a unified set of laws underlie all of nature

Thales: Water; Anaximander: Apeiron (meaning "the undefined infinite"); Anaximenes: Air; Heraclitus: Fire; Parmenides: One (an unmoving perfect sphere, unchanging and undivided)

Atheism

Naturalism

nature is all that exists, and that all things supernatural (including gods, spirits, souls and non-natural values) therefore do not exist

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