The truth must essentially be regarded as in conflict with this world; the world has never been so good, and will never become so good that the majority will desire the truth.

Christians remind me of schoolboys who want to look up the answers to their math problems in the back of the book rather than work them through.

Every mental act is composed of doubt and belief, but it is belief that is the positive, it is belief that sustains thought and holds the world together.

Future is everything that past has forgotten.

The reign of the tyrant ends with his death, and the reign of the martyr starts with it.

Shows itself in the notion that what may be objectively true may in the mouth of certain people become false.

Men think that it is impossible for a human being to love his enemies, for enemies are hardly able to endure the sight of one another. Well, then, shut your eyes--and your enemy looks just like your neighbor.