Whatever is reasonable is true, and whatever is true is reasonable

The real is the rational and the rational is the real.

The State is the absolute reality and the individual himself has objective existence, truth and morality only in his capacity as a member of the State.

America is therefore the land of the future, where, in the ages that lie before us, the burden of the World's History shall reveal itself.

The courage of the truth is the first condition of philosophic study.

Not curiosity, not vanity, not the consideration of expediency, not duty and conscientiousness, but an unquenchable, unhappy thirst that brooks no compromise leads us to truth.

The more certain our knowledge the less we know.