痛苦是暂时的，但放弃是永远的。

There is only one boss. The customer. And he can fire everybody in the company from the chairman on down, simply by spending his money somewhere else.

Dreams are the language of God. When he speaks in our language, I can interpret what he has said. But if he speaks in the language of the soul, it is only you who can understand.

The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.

La liberté commence où l'ignorance finit.