儿童的进步不是取决于年龄，而是取决于能够自由地观看他周围的一切。

我已经注意到有爬山习惯的年轻人长大后通常有所作为。

The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.

The construction industry must evolve—or risk becoming obsolete.

The world needs more scientists who think like engineers, and more engineers who think like scientists.

Ignore what others may be thinking of you， because they aren’t.

我在大学的时候，一直想参与做能够改变世界的事情。而现在我就在做这样的事情。