To die for a great cause can never be counted as failure.
为伟大的事业捐躯，从来就不能算作是失败。
传记作者的挑战在于既要成为侦探，又要成为诗人。
虽然在一切的成长物中，爱情看上去是最快的，究其实却最迟缓。男男女女没有一个人晓得什么是十全十美的爱，除非一直到他们结婚了二十五年之后。
The more you experience positive emotions, the more open you become. The more open you are, the more you see. The more you see, the more you can do. The more you can do, the more you can grow.
历史学家既是侦探，也是讲故事的人。
"The only limit to our realization of tomorrow is our doubts of today."
My work is not for everyone, and that’s okay.
We are survival machines—robot vehicles blindly programmed to preserve the selfish molecules known as genes.