The earth's resources are finite, but human ingenuity is not.

Believe in yourself and all that you are. Know that there is something inside you that is greater than any obstacle.

在数学中，提出问题的艺术必须比解决问题更有价值。

The real danger is not that computers will begin to think like men, but that men will begin to think like computers.

The world is in a constant state of flux. Nothing remains the same from one moment to the next. You can never step into the same river twice.

书是一面镜子：如果一头驴往里看，你不能指望看到一位使徒。