We must interpret a bad temper as a sign of inferiority.

War is organized murder and torture against our brothers.

The only worthwhile achievements of man are those which are socially useful.

Tears and complaints - the means which I have called water power - can be an extremely useful weapon for disturbing cooperation and reducing other to a condition of slavery.

All failures - neurotics, psychotics, criminals, drunkards, problem children, suicides, perverts, and prostitutes - are failures because they are lacking in social interest

The goal of the human soul is conquest, perfection, security, superiority.

There is no thing as a man who does not create mathematics and yet is a fine mathematics teacher. Textbooks, course material-these do not approach in importance the communication of what mathematics is really about, of where it is going, and of where it currently stands with respect to the specific branch of it being taught. What really matters is the communication of the spirit of mathematics. It is a spirit that is active rather than contemplative-a spirit of disciplined search for adventures of the intellect. Only as adventurer can really tell of adventures.