Train people well enough so they can leave, treat them well enough so they don't want to.

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.

The beauty of mathematics only shows itself to more patient followers.

哲学问题的形式是：‘我不知道我该怎么做。’

改变的秘诀在于集中你所有的精力，不是对抗旧的，而是建设新的。

读书是为了满足你自己天生的好奇心，不是为了给别人留下好印象，也不是为了完成什么任务。