A vocation is the backbone of life.

Many other such substitutes for war will be discovered, but perhaps precisely thereby it will become more and more obvious that such a highly cultivated and therefore necessarily enfeebled humanity as that of modern Europe not only needs wars, but the greatest and most terrible wars, consequently occasional relapses into barbarism, lest, by the means of culture, it should lose its culture and its very existence.

There is not enough religion in the world even to destroy religion.

I teach you the Overman. Man is something that shall be overcome. What have you done to overcome him? ... The time has come for man to set himself a goal. The time has come to plant the seed to his highest hope.

The most dangerous physicians are those born actors who imitate born physicians with a perfectly deceptive guile.

[Heraclitus] did not require humans or their sort of knowledge, since everything into which one may inquire he despises [as being] in contrast [to his own] inward-turning wisdom. [To him] all learning from others is a sign of nonwisdom, because the wise man focuses his vision on his own intelligence.

Unresolved dissonances between the characters and dispositions of the parents continue to reverberate in the nature of the child and make up the history of its inner sufferings.