A broad overview -- Ontology -- Epistemology -- Ethics -- The pre-Socratics, the Sophists, and Socrates -- Plato -- Aristotle -- Stoicism, epicureanism, and skepticism -- Middle Eastern religious philosophy -- Medieval philosophy -- Renaissance humanism -- The rise of science -- Spinoza, Leibniz, and Cavendish -- Empiricism -- The French enlightenment -- Idealism -- Mill, Marx, Kierkegaard, and Nietzsche -- Psychology, sociology, and anthropology -- Pragmatism -- Analytic philosophy -- Critical theory -- Phenomenology and existentialism -- Structuralism -- Post-structuralism -- Post-modernism -- Feminism -- New age philosophy -- Systems theory.