The study of mind is the study of adaptive behavior.

通往伟大的道路并不总是容易的，但它总是值得的。

治理社会就应当完全根据这种共同的利益。人们总是愿意自己幸福，但人们并不总是能看清楚幸福。

"All you have to do is write one true sentence. Write the truest sentence that you know."

I never regret my choices because that's my life.

我们未来最大的危险是冷漠。