"The truth is rarely pure and never simple."

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

自然科学是人类文化的一部分，它与艺术或宗教一样具有人性。

Leadership is about making the tough decisions and standing by them.

It is by no means an irrational fancy that， in a future existence， we shall look upon what we think our present existence， as a dream.

解释：要紧紧抓住时机不能错过，错过了也不能延误太久。

Humor is a powerful tool in children's books; it can make serious topics accessible.