It is not shame for a man to learn that which he knows not，whatever his age.
一个人不论年龄多大，都要学习自己不懂的东西。这不是羞耻。
What you risk reveals what you value.
天空才是极限，你要明白这一点。
"I write to understand. I write to not forget."
The only way to do great work is to love what you do.
我从未过多思考过我会如何死去，但为我所爱的人而死似乎是个不错的死法。
Liberal democracy may constitute the "end point of mankind's ideological evolution" and the "final form of human government."
人类的未来取决于我们理解和操纵量子世界的能力。
The more we learn, the more we realize how little we know.