在数学中,你不理解事物。你只是习惯了它们。
"In mathematics, you don't understand things. You just get used to them."
Marriage is a great institution.
Lock up your libraries if you like; but there is no gate, no lock, no bolt that you can set upon the freedom of my mind.
我们时代的挑战是建立一个为所有人服务的经济,而不仅仅是少数特权阶层。