You are too generous to trifle with me. If your feelings are still what they were last April, tell me so at once. My affections and wishes are unchanged, but one word from you will silence me on this subject forever.

Never try to discourage thinking, for you are sure to succeed.

I can never be safe; I always try and go against the grain. As soon as I accomplish one thing, I just set a higher goal. That's how I've gotten to where I am.

I write not to explain the world but to understand it.

数学的语言是普遍的，超越了文化和语言的障碍。

One should eat to live，not live to eat.

我们对生命了解得越多，就越意识到我们还有多少尚未发现的东西。

Coal enterprises must enhance their sense of social responsibility and achieve the unity of economic and social benefits.

记忆是一座迷宫，有时我们会迷失其中，但也是我们找到自己的地方。