The definition of morality: Morality is the idiosyncrasy of decadents having the hidden desire to revenge themselves upon life - and being successful.

We should not talk about our friends: otherwise we will talk away the feeling of friendship.

What do you believe in?--In this, that the weights of all things must be determined anew.

Partial knowledge is more triumphant than complete knowledge; it takes things to be simpler than they are, and so makes its theory more popular and convincing.

In pain there is as much wisdom as in pleasure: like the latter it is one of the best self preservatives of a species.

School has no task more important than to teach strict thought, cautious judgment, and logical conclusions, hence it must pay no attention to what hinders these operations, such as religion, for instance.

Every word is a preconceived judgment.