The value of any mental activity is measured by its contribution to successful living.

"Traveling – it leaves you speechless, then turns you into a storyteller."

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

I went to the woods because I wanted to live deliberately. I wanted to live deep and suck out all the marrow of life. To put to rout all that was not life. And not, when I had come to die, discover that I had not lived.

在非常小的领域里，现实的粒子和波动方面同样重要，空间和时间的经典概念失去了意义。

所有企业需要永葆青春。如果客户群与你一起变老，你就会重蹈伍尔沃斯的覆辙。

科学的进步不是通过事实的积累，而是通过发现它们之间的新关系。