金钱是唯一区分赢家和输家的东西。

The greatest threat to our forests isn’t logging—it’s indifference.

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.

每一个实验，即使是失败的，也会教会你一些有价值的东西。

The only way to learn mathematics is to do mathematics.

理解黑洞就是理解宇宙的结构本身。