数学的本质在于它的自由。

我思考历史的重量。

最好的科学是双手弄脏而头脑清醒时完成的。

你的工作将占据你生活的大部分，真正满意的唯一方法是做你认为伟大的工作。

Never take yourself too seriously. Nobody else does.

发现的兴奋永远不会消退。

You cannot make yourself feel something you do not feel, but you can make yourself do right in spite of your feelings.

The only way to find the limits of the possible is by going beyond them into the impossible.