Far more critical than what we know or what we don't know is what we don't want to know.

Radicalism itself ceases to be radical when absorbed mainly in preserving its control over a society or an economy.

Someone who thinks the world is always cheating him is right. He is missing that wonderful feeling of trust in someone or something.

We can be absolutely certain only about things we do not understand.

The birth of the new constitutes a crisis, and its mastery calls for a crude and simple cast of mind -- the mind of a fighter -- in which the virtues of tribal cohesion and fierceness and infantile credulity and malleability are paramount. Thus every new beginning recapitulates in some degree man's first beginning.

The real Antichrist is he who turns the wine of an original idea into the water of mediocrity.

Man is the only creature that strives to surpass himself, and yearns for the impossible.