To have no heroes is to have no aspiration, to live on the momentum of the past, to be thrown back upon routine, sensuality, and the narrow self

Failure sometimes enlarges the spirit. You have to fall back upon humanity and God.

One should never criticize his own work except in a fresh and hopeful mood. The self-criticism of a tired mind is suicide

A person of definite character and purpose who comprehends our way of thought is sure to exert power over us. He cannot altogether be resisted; because, if he understands us, he can make us understand him, through the word, the look, or other symbol

Unless a capacity for thinking be accompanied by a capacity for action, a superior mind exists in torture