艺术是关于提出问题,而不是提供答案。
Happiness ain't a thing in itself --- it's only a contrast with something that ain't pleasant. That's all it is.
No man really knows about other human beings. The best he can do is to suppose that they are like himself.
好奇心推动数学家前进,总是在寻找下一个要回答的问题。