Be scrupulously truthful, even when truth is inconvenient, for it is more inconvenient when you try to conceal it.

I want to stand as close to the edge as I can without going over. Out on the edge you see all kinds of things you can't see from the center.

Mathematics is the foundation upon which all science is built.

我们写的每一个方程都是理解宇宙的一小步，但旅程是无限的。

在商业中，就像在化学中一样，正确的元素组合能创造出非凡的东西。

I don't believe in happy endings, I believe in necessary endings.

Over time, our emerging high-usage products will likely generate significant new revenue streams for Google as well as for our partners, just as search does today.