"To be a writer is to sit down at one's desk in the chill portion of every day, and to write; not waiting for the little jet of the blue flame of genius to start from the breastbone--just writing."

What is most personal is most universal.

我是一个战士，我相信爱的力量。

The man who speaks to you of sacrifice, speaks of slaves and masters. And intends to be the master.

All the effects of Nature are only the mathematical consequences of a small number of immutable laws.

从生活中学习，从书籍中学习，从他人中学习。

幸福的秘诀是自由，而自由的秘诀是勇气。