You can't think your way through life. You have to live your way through it.

The true paradises are the paradises that we have lost.

Know what you own, and know why you own it.

【译文】要像瓶口那样不轻易开口，要像城防那样时时戒备。宁愿让别人辜负我，决不让自己辜负别人。做事要三思而后行，首先不要违背自己的良心。活着的老虎尚可以靠近，心地恶毒的人千万不能亲近。在你跟前说别人坏话的人，就是制造是非的小人。

数学的本质在于它的自由。

一个公司应该有一种长期的思维方式，而不是短期的思维方式。