Free Will| Internet Encyclopedia of Philosophy
Epicurus (341—271 B.C.E.)| Internet Encyclopedia of Philosophy
Jean Paul Sartre: Existentialism| Internet Encyclopedia of Philosophy
Sigmund Freud (1856—1939)| Internet Encyclopedia of Philosophy
Michel Foucault (1926–1984)| Internet Encyclopedia of Philosophy
Plato (427—347 B.C.E.)| Internet Encyclopedia of Philosophy
Friedrich Nietzsche (1844—1900)| Internet Encyclopedia of Philosophy