If you look into your own heart, and you find nothing wrong there, what is there to worry about? What is there to fear?

A father's and a mother's age must be borne in mind; with joy on the one hand, fear on the other.

In every ascetic morality man worships a part of himself as God and for that he needs to diabolize the other part.

The preponderance of pain over pleasure is the cause of our fictitious morality and religion.

When one gives up Christian belief one thereby deprives oneself of the right to Christian morality. For the latter is absolutely not self-evident: one must make this point clear again and again, in spite of English shallowpates.

A person must have a good memory to keep the promises he has made. A person must have a strong imagination to be able to have pity. So closely is morality tied to the quality of the intellect.