Philosophy is by its nature something esoteric, neither made for the mob nor capable of being prepared for the mob.

To him who looks at the world rationally the world looks rationally back.

Consequently, the sensuous aspect of art is related only to the two theoretical sensesof sight and hearing, while smell, taste, and touch remain excluded.

Nothing great in the world has ever been accomplished without passion.

War is progress, peace is stagnation.

What experience and history teach is this - that nations and governments have never learned anything from history, or acted on any lessons they might have drawn from it. Variant: What experience and history teach is this - that people and governments never have learned anything from history, or acted on principles deduced from it.

I have the courage to be mistaken.