"A book is a friend that never lets you down."

The pursuit of knowledge is a journey without a final destination.

The future is not something we enter. The future is something we create.

对人骄傲无礼的人，不是有出息的人。骄傲，就是自满；自满，就是空虚。行事有了自满与空虚，做事就会被限制。

The joy of mathematics is in the discovery of patterns and the understanding of their implications.

The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.

人生就像一首歌，有高潮也有低谷。