可持续性不仅仅是植树，而是在正确的地方种植正确的树木，并确保它们世代繁茂。

My blindness is not a tragedy, but an opportunity to see the world in a different way.

The only person you should try to be better than is the person you were yesterday.

The essence of mathematics lies in its freedom.

做出伟大工作的唯一方法就是热爱你所做的事。

"The past is never dead. It's not even past."

The higher your energy level, the more efficient your body. The more efficient your body, the better you feel and the more you will use your talent to produce outstanding results.

数学家研究纯数学不是因为它有用；他研究它是因为他喜欢它，他喜欢它是因为它美丽。

The only way to get through life is to laugh your way through it. You either have to laugh or cry. I prefer to laugh. Crying gives me a headache.