永远不要停止学习；一旦停止，你就会过时。

General relativity has passed every test we’ve thrown at it, even near a supermassive black hole.

你想用卖糖水来度过余生，还是想要一个机会来改变世界？

The only thing that makes life possible is permanent, intolerable uncertainty; not knowing what comes next.

失败不可怕，可怕的是不敢尝试。