宇宙是一个相当大的地方。如果只有我们，那似乎是对空间的极大浪费。

We must remember that this is a very small star and probably some of the larger and the more important stars and may be very virtual and happy.

"Books are mirrors: you only see in them what you already have inside you."

要说“我爱你”，首先必须能够说“我”。

The most important property of a program is whether it accomplishes the intention of its user.

在暴君有权杀死一个国家的权利被证明之前，一个国家在必要时杀死暴君的权利永远不会被怀疑。

Nowadays, particularly in the United States, if you meet someone at the bottom of society, they may unkindly be described as a "loser." There's a real difference between an unfortunate and a loser, and that shows 400 years of evolution in society and our belief in who is responsible for our lives. It's no longer the gods, it's us. We're in the driving seat.

It is the preoccupation with possessions， more than anything else， that prevents us from living freely and nobly.