My conception of freedom. — The value of a thing sometimes does not lie in that which one attains by it, but in what one pays for it — what it costs us. Liberal institutions cease to be liberal as soon as they are attained: later on, there are no worse and no more thorough injurers of freedom than liberal institutions.

Too long, the earth has been a madhouse!

The strength required for the vision of the most powerful reality is not only compatible with the most powerful strength for action, for monstrous action, for crime - it even presupposes it.

God is a too palpably clumsy answer; an answer which shows a lack of delicacy towards us thinkers-fundamentally, even a crude prohibition to us: you shall not think!

Invisible threads are the strongest ties.

"Faith" as an imperative is a veto against science-in praxi, it means lies at any price.

Where one despises, one cannot wage war.