The most profound ideas in mathematics often arise from the simplest observations.

Be yourself and don't care what others think.

A journey is a person in itself; no two are alike. And all plans, safeguards, policing, and coercion are fruitless. We find after years of struggle that we do not take a trip; a trip takes us.

It's probably as unlikely that you would nowadays become as rich and famous as Bill Gates, as it was unlikely in the17th century that you would accede to the ranks of the French aristocracy. But the point is, it doesn't feel that way. It's made to feel, by magazines and other media outlets, that if you've got energy, a few bright ideas about technology, a garage -- you, too, could start a major thing.

我唯一知道的是我一无所知。

The psychologist must be a dispassionate observer.

The beauty of science is that it allows us to see the world not as it is, but as it could be.

生命的意义在于发现你的天赋，生活的目的是把它奉献出去。