And if ye cannot be saints of knowledge, then, I pray you, be at least its warriors. They are the companions and forerunners of such saintship.

Mistrust those in whom the urge to punish is strong.

It is a prejudice to think that morality is more favourable to the development of reason than immorality.

The most fatal seductive lie that has yet existed

The sick are the greatest danger for the healthy; it is not from the strongest that harm comes to the strong, but from the weakest.

What if God were not exactly truth, and if this could be proved? And if he were instead the vanity, the desire for power, the ambitions, the fear, and the enraptured and terrified folly of mankind?

Moral contempt is a far greater indignity and insult than any kind of crime.