"Books are the keys to understanding ourselves."

The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.

Computer science is no more about computers than astronomy is about telescopes.

相信生命值得活下去，你的信念会帮助创造这个事实。

品格比恢复更容易保持。