If you don’t make mistakes, you’re not working on hard enough problems. And that’s a big mistake.

The first step is to establish that something is possible; then probability will occur.

Your brain is like a muscle; the more you use it, the stronger it gets.

"The past is always tense, the future perfect."

我喜欢夜晚。没有黑暗，我们永远看不到星星。