Western Philosophy

A map of western philosophy, starting from the pre-socratic through modernity.

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Western Philosophy by Mind Map: Western Philosophy

1. The Renaissance

1.1. Machiavelli

1.1.1. Inventor of Political Science

1.1.2. The Prince "It is better to be feared than to be loved, because love is fickle but fear is constant. Reputation for honesty, integrity is important But not the practice of it.

1.2. Thomas Moore

1.2.1. Wrote "Utopia" Mocked modern English society All property is communal Marriage is by love, not arranged Elected parliament Price elected for life War for 3 Reasons Defend Territory Defend Ally Territory Liberate oppressed people Moral Theory focused on happiness

1.3. Erasumus

1.3.1. Opposed strong enthusiasms

1.4. Galileo

1.5. Francis Bacon

1.5.1. Sought to separate religion from natural philosophy

1.5.2. Stressed Induction and Experimetnal Methods

1.6. Descartes

1.6.1. "Cogito ergo sum" The most basic of all ideas, the existence of which cannot be disputed

1.6.2. Two Proofs of God A perfect being could only come from a perfect being. From necessity: a perfect being must have existence to be perfect.

1.6.3. Dualist (Mind/Body Dualism)

1.7. Hobbes

1.7.1. Leviathan

1.7.2. We are guided by passions, not reason

1.7.3. Passions Desire for Power Fear of Death

1.7.4. Government is a means of escaping struggle between power and fear

1.7.5. Governments derive their power from the subjects in exchange for peace and security

1.7.6. The Social Contract

1.7.7. Brutish, solitary and short.

1.8. Spinoza

1.8.1. Freewill is a logical impossibility because all causes have precedents

1.8.2. Rejected dualism of Descartes

1.9. Bayle

1.9.1. Skepticism

1.9.2. What do we know with any certainty?

1.9.3. God cannot be known via reason, only faith

1.10. Newton

1.10.1. Principia

1.10.2. Law of Gravity

1.10.3. Laws of Motion

1.10.4. Discovered calculus

1.10.5. Modern optics

2. Pre-Socratic

2.1. Four elements: Earth, Water, Air and Fire

2.2. Sophists ~ 450BC

2.2.1. First attempt at a full-fledged philosophical doctrine

2.2.2. Protagoras Considered the first sophist

2.2.3. Professional teachers

2.2.4. Despised by Plato Because they charged fees Because they used rhetorical sleight-of-hand

2.3. Pythagoreans ~ 500BC

2.3.1. Believed in reincarnation

2.3.2. Heavily influenced by mathematics and mysticism

2.3.3. Transmigration of the Soul was a core belief

2.3.4. Were vegetarians

2.4. Heraclitus - 535-475BC

2.4.1. "No man steps in the same river twice."

2.4.2. Diogenes primary biographer

2.5. Parmenides ~ 450BC

2.5.1. Only known work was "On Nature" - a poem

2.5.2. Claimed that truth cannot be know through sensory perception, only through logos.

2.6. Zeno of Elea - 490-430BC

2.6.1. Reducto ad Absurdum

2.6.2. Zeno's Paradox Arhilles and the Tortoise

2.7. Herodotus - 484-425BC

2.7.1. Greek Historian

2.7.2. First known writer to collect and document his ideas systematically.

2.8. Thucydides - 460-395BC

2.8.1. The Pelopomnesian War - his greatest contribution to history.

2.8.2. "The Father of Scientific History"

2.8.3. "The Father of the school of political realism"

2.9. hello

3. Romans

3.1. Cicero - 106-43BC

3.1.1. Brought Greek philosophy to the Romans

3.1.2. Combined Skeptics, Epicureanism

3.1.3. Virtue is happiness from Aristotle

3.1.4. Epicurean principle of refined and disciplined pleasure

3.2. Skeptics

3.2.1. Sextus Empiricus

3.2.2. Raised the question "How do we know what we know?"

3.2.3. Can we trust any of our own knowledge?

4. Christians

4.1. Hebrew Bible

4.1.1. Explores the relationship between God and the people of Jerusalem

4.1.2. Central theme is the Covenant

4.1.3. Abraham Isaac Jacob (Israel)

4.2. Old Testament

4.2.1. Book of Job Asks the question "Why do the righteous suffer?" Satan challenges Lord Lord inflicts cruelty on Job Job does not forsake his Lord

4.3. New Testament

4.3.1. Paul Early author The Gospels Baptism as the means by which Jews become Christians Rejects circumcision as a necessary rite to become Christian

4.4. Augistine - 354 - 430

4.4.1. Combined christian with platonic

4.4.2. Wrote "Confessions"

4.4.3. The Grace of God

4.4.4. Is grace a gift of god, or must it be earned?

4.4.5. Predestination - God knows from the start who will receive The Grace

4.5. Aquinus - 1225-1274

4.5.1. Argues that the eternity of the world cannot be demonstrated by pure logic.

4.5.2. Wrote the "Summa Theologica"

4.5.3. Aristotelian

4.5.4. Truth could be achieved through natural or divine reason

4.5.5. Four Cardinal Virtues Prudence Temperance Justice Fortitude

4.5.6. Five Ways on the Nature of God God is simple, without composition of parts God is perfect, lacking nothing God is infinite God is immutable God is one

4.6. Medieval Thought

4.6.1. Realism Words have meaning in and of themselves

4.6.2. Nominalism Words have no inherit meaning

4.7. Luther - 1483-1546

4.7.1. Disagreed with Augustine's automatic granting of grace by god

4.7.2. Wrote the 95 Theses In response to Indulgences sold by the Pope Strongly believed that freedom from God's punishment could not be purchased with money.

4.7.3. Earned grace through belief in Jesus Salvation is not earned by good deeds Faith in Jesus brings salvation

4.7.4. Once justified, you can be condemned through the commission of sin.

4.8. Calvin - 1509-1564

4.8.1. Grace was given by god

4.8.2. Knowledge of God not attainable through experience, only through studying of scripture

4.8.3. Rejected catholic doctrine of merit

4.8.4. Supported the notion of predestination

4.8.5. Once justified, always justified

4.8.6. Justification comes through having a conversion experience

4.8.7. Proponent of the concept of the original sin

5. The Enlightenment

5.1. Adam Smith - 1723-1790

5.1.1. The Wealth of Nations: The Division of Labor Specialization of job function leads to massive gains in efficiency. Coordination and cooperation between specialists is done out of self-interest. We get what we need from others out of their self-interest, not their charity.

5.1.2. The Theory of Moral Sentiment Offers an explanation and basis for the cooperation and coordination that are required for the division of labor described in Wealth of Nations. Why? We want the approval of others The reactions of others to us and our behaviors is important to us. We generally seek to behave as if there were an impartial spectator observing our behaviors. Would they approve of them? Our conscience is a product of these factors. Obeying the law We do so because of the utility of doing so. In general, we derive benefit when we do so.

5.1.3. He was aware of the dangers and problems that could arise from too much specialization of labor and the social isolation that could result.

5.1.4. He worried about the moral impact on someone who shifted from a village-centric social context to that of a large city and the anonymity that could result.

5.1.5. Smith is also concerned about class and wealth disparity and that impacts that would have on society.

5.2. Rousseau - 1712-1778

5.2.1. Critiqued the progress of modern society Moral decadence always accompanies cultural progress American Indians in their simplistic life compare favorably to Europeans in their levels of happiness and virtue.

5.2.2. Claimed that enlightenment beliefs led to eventual collapse of civilizations

5.2.3. Called for a return to nature

5.2.4. Social Contract All power is given to the state Your happiness is calculated as your share of the overall societal happiness

5.3. David Hume - 1711-1766

5.3.1. Epistemology Ideas are copies of our sense impressions Three relations among ideas Resemblance Spatio-temporal Cause-effect Reason alone cannot justify our belief in experience Belief in our experiences as representing the external world accurately is based on our instinct or custom, and cannot be proven with reason.

5.3.2. Morality Scientific theory of morality Moral judgment cannot be based on rational deliberation, because simpletons and infants are also capable of making more judgments. There is no evidence that indicates that the most intellectually capable members of our species are the most moral. Therefore, our sense of morality is based in part on our biology and in part by our social context. What makes a moral rule a universal more rule? Primarily, its utility All government and political institutions have their basis in utility to society. We have a natural appreciation for virtuous behavior, and are thus naturally moral at least in part. You cannot deterministically go from an "is" to an "ought"

5.3.3. Religion Basing religious belief on inference from experience has four flaws It means that religion is probable at best, because all ideas are derived from experience, not reason. In all scientific inquiries, negative evidence counts more than positive evidence. So we would require positive evidence with zero negative evidence in order to justify our belief in god through experience. Effects do not prove a cause. In the end, Hume is dismissive of both religion in general and in the ability to base religious belief on experience.

5.4. Montesquieu - 1689-1755

5.4.1. Objected to Locke's Epistemological Relativism

5.4.2. The laws of nature are demonstrable across cultures, therefore not all knowledge is relative

5.4.3. Believed that democratic republics are the most morally desirable but least stable forms of association

5.4.4. Greatly influenced American Revolution Must limit the ability of government to grow in power

5.4.5. Affluence eventually leads to despotism

5.5. Bishop Berkeley - 1685-1733

5.5.1. There is no existence independent of perception

5.5.2. To exist is to be perceived

5.5.3. Disagreed with Locke's argument that human knowledge depends on the existence of material objects independent of minds.

5.5.4. Claimed that materialism was dogmatic superstition.

5.5.5. All of our ideas are derived from our experiences

5.6. Mandeville - 1670-1733

5.6.1. The Fable of the Bees

5.6.2. Central Human Traits Selfishness Egocentrism

5.7. Vico - 1678-1744

5.7.1. Philosophy of history

5.7.2. Human societies are cyclical Worship of gods Emergence of Heroes and kings Age of man Inherently unstable Leads to collapse

5.7.3. Disagreed with social contract theory Society is not a contract but the natural progression from customs and mores

5.8. Leibniz - 1646-1716

5.8.1. Co-inventory of Infinitesimal Calculus

5.8.2. Asserted "The best of all possible worlds"

5.8.3. Metaphyics - La Monadologie An attempt to resolve the problem of mind/body dualism Nothing arises from nothing Everything that exists has a reason to exist Everything which exists is better than anything non-existent

5.8.4. Théodicée Reason and faith are gifts from God Sin and Suffering are the result of metaphysical imperfections Although God has unlimited reason and willpower, humans do not which makes sin and suffering possible.

5.8.5. Early developer of formal/algebraic logic

5.9. John Locke - 1632-1704

5.9.1. Politics A man is free when he is subject only to political authority to which he has consented. Natural liberty is freedom from the arbitrary power of others Beginning of modern democratic political theory. Denies need for authoritarian power, which leads to despotism and tyranny Denies that fear is the primary motivator of men Natural Rights Life Liberty Property Men are governed by laws from a legislature Opposed monarchies Modern social contract theory An agreement among free and equal men to exit the state of nature and by forming a limited polity. Stressed that equality was legal equality, not equality of material possessions.

5.9.2. Knowledge/Epistomology Empericist Ideas are acquired via experience Two forms of experience The external world Reflection on the mind's own operations There are no innate ideas The mind is a Tabula Rasa

5.9.3. Ethics Ethics are learned, not innate Ethics are derived from experience, and thus relative to our experience of the world

6. Modernity I

6.1. James

6.1.1. Pragmatism

6.1.2. Saw his approach to philosophy as empowering the individual.

6.1.3. There is no notion of absolute truth.

6.2. Freud

6.2.1. Id Represents the Self More powerful than ego, superego Seeks to gain pleasure, avoid pain Knows no moral judgements Produces frustration by making demands that cannot be fulfilled.

6.2.2. Ego Represents Reality Rational, cautious Weakest element of our personality Attempts to negotiate between Id and Superego Source of anxiety

6.2.3. Superego Represents Morality Imposes standards of moral perfection that cannot be sustained. It produces guilt.

6.2.4. Conflict among these three factions leads to unhappiness.

6.2.5. "Civilization and Its Discontents"

6.3. AJ Ayer

6.3.1. Philosophy should abandon the pursuit of an absolute metaphysics.

6.3.2. All talk about the world was a "logical construct" of our phenomenal and sensual experience.

6.3.3. Considered philosophy the handmaiden of science - to help explain scientific meaning.

6.3.4. Positivism was partly a response against the complete relativism of Kant. Positive = Pro-science

6.3.5. Positivism was also built on the progress in symbolic logic and related mathematics.

6.3.6. Language does not have a deterministic meaning or external provable correspondence.

6.3.7. Believed that statements of ethical judgements were meaningless.

6.4. Max Weber

6.4.1. Founder of modern sociology

6.4.2. Focused on how authority is legitimated in societies.

6.4.3. Legitimacy has three forms Legal Traditional Charismatic

6.5. Dewey

6.5.1. Pragmatist

6.5.2. Gave pragmatism a historical context -

6.5.3. Pragmatism stats that the meaning of a statement was the practical results in experience that we would expect if that statement were true.

6.5.4. Rejects the notion of truth and replaces it with "warranted assertability"

6.6. Heidegger

6.7. Wittgenstein

6.7.1. Greatly influenced by Bertrand Russell.

6.7.2. Believed that metaphysics was flawed, because it was based on the mistaken use of language.

6.7.3. recent nytimes discussion traditional philosophy was inherently scientific purely theoretic philosophy is in conflict with a scientistic approach traditional philosophy over analogizes and over simplifies in the name of theoretical consistency modern philosophy must therefore avoid theory creation and should be primarily therapeutic

6.8. Husserl

6.8.1. Criticized the relativism of Nietzsche, who believed that absolute truth cannot exist apart from our perspectives of it.

6.8.2. Rejected skepticism for stating that even if there were absolute truths, we would have no way to know them.

6.8.3. Rejected historicism for insisting that all truth is relative to the historical context in which it originates.

6.8.4. Rejected positivism for insisting that only truths that are based on empirical phenomena are possible - partly because it leaves to room for mathematical axioms/truths which are not empirical.

6.8.5. Husserl believed that philosophy should seek certainty, not facts.

7. Modernity II

7.1. Hayek

7.1.1. Socialism and central planning is incompatible with individual freedom

7.1.2. Argued that there is a social division/dispersion of knowledge that leads to an efficient determination of prices.

7.1.3. Prices do not necessarily represent merit.

7.1.4. Therefore, rewards and social justice will not always be dispersed according to merit.

7.1.5. Wrote the "Road to Serfdom" People have incompatible preferences which central planning cannot possibly account for. Planned economies lead to concentrations of power. Therefore, central planning inevitably leads to a loss of freedom.

7.2. Popper

7.2.1. Was strongly influenced by how Einstein challenged the thoroughly confirmed and widely held confidence in Newton.

7.2.2. Argued that science can strive for truth, but will never be 100% sure if/when it has achieved it.

7.2.3. Our best form of knowledge is science, but that cannot be taken as justified truth.

7.2.4. Insisted on the testability of scientific ideas.

7.2.5. The objectivity of any scientific idea could only be established through critique.

7.3. Kuhn

7.3.1. The Structure of Scientific Revolutions

7.3.2. Paradigm Shift

7.3.3. Most scientific work is spent filling out the details of the prevailing paradigm, not in divergent or critical investigation.

7.3.4. Over time anomalies accumulate in the prevailing paradigm, eventually building into a 'paradigm shift' Aristotle (earth is center of universe) Copernicus (sun is center of universe) Newton Einstein ???

7.3.5. A field of study is NOT a science until it has a single, unifying paradigm within which most of its practitioners work.

7.3.6. Kuhn characterized progress in science as a highly social, and not necessarily rational, mechanism.

7.4. Qine

7.4.1. Effective critic of logical positivism

7.4.2. Attacked Empiricism There is no real distinction between synthetic truths and analytic truths. The principle of reductionism - that every high level statement could ultimately be reduced to simpler statements of sense experience - does not work. This is because our ability to reason about sensory experience is constrained by the symbol language we use to reason about it. These language impose their own boundary conditions to what can be reasoned.

7.5. Habermas

7.5.1. Stressed the importance of the 'public sphere' of communications and how it enabled democracy.

7.5.2. These social institutions enabled groups of individuals to discuss and openly debate and ultimately impact their political institutions.

7.5.3. Wrote "Theory of Communivative Action" Argued against the subject/object foundations of Marx and others. Instead, ethics and politics should be analyzed from a social perspective of self/other.

7.6. Rawls

7.6.1. Wrote "A Theory of Justice" The task of any theory of social justice is the legitimate the inequalities that emerge in the basic structure of society. To assess any system, you must do so from the 'original position' Veil of Ignorance: You must not know your place in the social structure of society, or what your natural talents may be. All participants must be disinterested in the outcome of the debate. Each person is to have an equal right to the most extensive basic liberty that is compatible with a similar liberty held by all others. If there are any inequalities in the system, they can only be justified if first - they are to everyone's advantage - and second - they be attached to positions or offices that are open to all.

7.7. Derrida

7.7.1. Deconstructionist

7.7.2. Questioned the entire western tradition of trying to define a 'true logos' behind our empirical view of the world. This began with Plato's forms, and has been carried forward ever since.

7.7.3. Follower of Nietzsche, Freud and Heidegger Nietzsche did away with the concept of absolute truth. Freud did away with the concept that the subjective self or consciousness has any special access to the 'logos' or true forms. Heidegger did away with the notion of an 'I am' that precedes existence. He argued (from Sartre) that you must exist in order to have an essence. There is no essence without existence.

7.7.4. Deconstructionism directly opposes the Christian belief that Jesus/God embodies the perfect 'form' of man.

7.7.5. Like Sartre (existentialism) - the absence of a higher plan or purpose to life does NOT render life meaningless.

7.7.6. He wants to free us from the guilt over the absence of absolute meaning or purpose in life. There can be none, so get over it.

7.8. Rorty

7.8.1. Absolute truth cannot be found in language - it is merely a statement that we approve of.

7.8.2. Modern philosophers should give up the pursuit of absolute truth, and instead should seek to eliminate the cruelties of everyday life that these historical social norms have placed upon us.

7.8.3. His basic critique of western philosophy centers on the refutation of the existence of a "God's eye-view" of the world

7.8.4. Pragmatism is the ultimate anti-philosophy

7.8.5. Pragmatism is the ultimate anti-philosophy Rejects the goal of defining truth as the level of correspondence with an objective reality. Truth should be approached pragmatically: Does the statement work for us? Also rejects absolute realism. Our experience of reality will always be influenced by the conceptual framework in which we analyze it. And that framework is constantly changing.

7.8.6. Argues that many aspects of our language and are beliefs are contingent - not necessarily true or false.

7.8.7. But it is important for our overall system of beliefs to 'hand together' and to be free of inconsistencies.

7.9. Gouldner

7.9.1. Critic of the Marxist attempt to define society in terms of who owns the means of physical production, and the class distinctions that such a model result in.

7.9.2. The succession of modern ideologies owes its existence to the American and French revolutions, which made it possible to be an intellectual dissident.

7.9.3. Each ideology seeks to destroy competing ideologies while itself claiming to be disinterested.

7.9.4. Class struggle in the modern west occur between old money and new intelligentsia (engineers, doctors, lawyers, scientists) The struggle is not, as Marx described it, between those who controlled the means of production and the serfs below them.

7.10. MacIntyre

7.10.1. Rejects the moral relativism that began with the Enlightenment thinkers (Locke, Hume, Kant).

7.10.2. Admits that an absolute proof of any particular moral theory is beyond reach, but that our social traditions are a valid basis by which to evaluate our moral theories.

7.10.3. Claims that social tradition is a necessary precondition for rationality. Without those traditions, there can be no rationality.

7.10.4. The moral relativism of 'modern philosophy' is itself yet another tradition.

7.10.5. He sees 'modern philosophy' as a tradition that is hostile to the very notion of traditions, and is thus self-contradictory.

7.10.6. The 'is-ought' gap This is the fundamental problem for all moral philosophy. If you believe in a fundamental difference between statements of fact vs. statements of value, it becomes impossible to to move from 'what is' to 'what ought to be'. This inability to find a rational justification to any given set of moral rules is a pervasive feature of modern philosophical endeavors. Thus modern philosophy leads to moral skepticism.

7.10.7. What is a tradition? The entire history of its world view over time. The community of people who are its bearers. The social practices of that community. They are like Kuhn's Scientific Paradigms. However, it must be possible for one tradition to judge other traditions based on rational criteria. Example (Margaret Med): A primitive New Guinean tribe will have a tradition of beliefs, including truths about the world, that directly contradict most modern western traditions. But we should not conclude that their belief system is un-judge-able, or equal to our traditional system of beliefs - there MUST be a basic by which to critique. Nazi-ism, for example, is a tradition. We should be able to rationally argue why it is a bad tradition. Why it is wrong. Relativism would make this judgement impossible. The criteria: One tradition is more rational than another if It can explain both the success and failures of the other tradition better than the other tradition itself can explain. If it can understand the other tradition well enough to explain its failures to it in the other tradition's own terms.

7.11. Nozick

7.11.1. Limited Governement Wrote "Anarchy, State, and Utopia" Starts with the basic principle that a lone individual has certain rights that no other person may infringe upon. Then asks the question: With that as the basis, is there a form of government that can adhere to that principle? If so, what would it look like? The starting point is an individual who has the right to personal property. That is the state of nature. Nozick does not attempt to justify this starting point - where does that initial right derive from and can it be proven. He simply takes it 'as-is'. This is a weakness that others have used to refute much of his arguments. He then argues that only a very limited state may exist that would not infringe upon that fundamental right. Involuntary redistribution of the wealth for even a single individual would be illegitimate. Nozick argues that a minimalist government is possible that does not infringe upon this basic right, and that it can be achieved without gaining the consent or participation of ALL individuals (which would necessarily entail some amount of coercion). The only role of this minimal government is to enforce protection rights (police and judicial).

7.11.2. Redistribution of Wealth Taxes mean that others have a claim of ownership in you, and are therefore morally equivalent to forced labor and slavery. However, charitable redistribution is fine - only forced redistribution is wrong.

7.11.3. How do we assess a just society The means: The individual steps that led to the current distribution of wealth were each fair, just and entered into freely by both participants. The ends: The resulting distribution of wealth is equal among all participants, regardless of whether coercion was used to move some wealth from one to another.

8. Modernity III

8.1. Jerry Fodor

8.1.1. Proponent of psychological nativism

8.1.2. mental states are relations between individuals and mental representations

8.1.3. mental states are expressed in a Language of Thought

8.2. Daniel Dennett

8.2.1. Believes that the notions of Free Will and Determinism can be reconciled

8.2.2. Focused on establishing a philosophy of mind that is firmly empirical

8.2.3. Has argued that natural selection can account for the emergence of morality

8.3. Paul Churchland

8.3.1. Proponent of Eliminative Materialism

8.3.2. Every day mental concepts will eventually be eliminated by a fully mature neuroscience

8.4. Thomas Nagel - 1937 -

8.4.1. "What is it like to be a bat?" A refutation of reductionism as it pertains to the mind. Consciousness cannot be explained without reference to the phenomenon of being that thing.

8.4.2. Believes that the current understanding of the physical world is insufficient to explain what it is like to "be some thing".

8.4.3. Student of John Rawls

8.5. Leonard Piekoff - 1933 -

8.5.1. Intellectual hier to Ayn Rand

8.5.2. Objectivism: The Philosophy of Ayn Rand

8.5.3. Metaphysics There is an objective reality that exists independently of our experience of it.

8.5.4. Epistomology All knowledge is acquired via an intellectual process

8.5.5. Ethics Rational self-interest Rational egoism

8.5.6. Economics Unregulated Lassiez-faire Capitalism

8.5.7. Politics The role of government is to protect the rights of individuals Only government should have the right to apply justice and physical punishment. Democratic with guaranteed individual rights Government has no rights except those delegated to it by the citizens

8.5.8. Foreign Policy Use of armed forces strictly defensive Free trade should be encouraged

8.6. Albert Camus - 1913-1960

8.6.1. Absurdism

8.6.2. We value our lives and existence

8.6.3. But our mortality makes our lives meaningless

8.6.4. To embrace that paradox is absurdism

8.7. Jean-Paul Sartre - 1905-1980

8.7.1. Existentialism

8.7.2. There is no creator

8.7.3. We are condemned to be free

8.7.4. Existence precedes essence

8.7.5. Authenticity and individuality are earned, not learned

8.8. Kurt Gödel - 1906 - 1978

8.8.1. Best known for his "incompleteness theorems"

8.8.2. For any computable axiomatic system If the system is consistent, it cannot be complete The consistency of the axiums cannot be proven by the system itself

8.9. Bertrand Russell - 1872 - 1970

8.9.1. Developed Analytic Philosophy

8.9.2. Co-authored Principia Mathematica

8.9.3. Established the logical underpinnings of mathematics

8.10. Rudolf Carnap - 1891 - 1970

8.10.1. Member of the Vienna Circle

8.10.2. Supporter of Logical Positivism

8.10.3. Developed a formal version of empericism

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10. http://en.wikipedia.org/wiki/Twitter