Becoming fearless isn't the point. That's impossible. It's learning how to control your fear, and how to be free from it.

Data is only as good as the questions we ask of it.

当儿童还没有发展起控制能力的时候，“让儿童想干什么就干什么”是与自由观念相违背的。

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

When you doubt your power, you give power to your doubt.

最深刻的定理往往有最简单的证明 - 如果你从正确的角度看它们的话。