作家是一个写作的人，而不是一个被写的人。
The writer is a person who writes, not a person who is written about.
Everything can be taken from a man but one thing: the last of the human freedoms—to choose one's attitude in any given set of circumstances.
当一个人不能再拥有的时候，他唯一能做的便是不要忘记。
The true measure of our success will be what we leave for future generations.
数学的本质在于它的自由。