We must be physicists in order to be creative since so far codes of values and ideals have been constructed in ignorance of physics or even in contradiction to physics.

Wherever on earth the religious neurosis has appeared we find it tied to three dangerous dietary demands: solitude, fasting, and sexual abstinence.

Morality makes stupid.- Custom represents the experiences of men of earlier times as to what they supposed useful and harmful - but the sense for custom (morality) applies, not to these experiences as such, but to the age, the sanctity, the indiscussability of the custom. And so this feeling is a hindrance to the acquisition of new experiences and the correction of customs: that is to say, morality is a hindrance to the development of new and better customs: it makes stupid.

One ought to hold on to one's heart; for if one lets it go, one soon loses control of the head too.

Thus the will to power strives towards oppositions, towards displeasure. There is a will to suffering at the foundation of all organic life (contrary to "happiness" as "goal").

The Christian church has left nothing untouched by its depravity; it has turned every value into worthlessness, and every truth into a lie

It is not conflict of opinions that has made history so violent but conflict of belief in opinions, that is to say conflict of convictions.