死亡可能是人类最伟大的福气。

柏拉图是我的朋友，亚里士多德是我的朋友，但我最伟大的朋友是真理。

History is not the past. It is the present. We carry our history with us.

The future is no longer what it was.

The development of computational complexity theory has shown us that not all problems are created equal.