"The unexamined life is not worth living"

Socrates in Plato's Apology

"The only theory of knowledge which can be valid today is one which is founded on that truth of microphysics: the experimenter is a part of the experimental system. This is the only position which allows us to get rid of all idealist illusion, the only one which shows the real human being in the midst of the real world. But this realism necessarily implies a reflective point of departure; that is, the revelation of a situation is effected in and through the praxis which changes it."

Jean Paul Sartre

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