一个好的数学家是懒惰的,但是以一种建设性的方式。
You get what you give. What you put into things is what you get out of them.
【释义】经过多年努力也还不够,一旦毁坏却十分彻底。
道德宇宙的弧线很长,但它弯向了正义。
Foreign policy should not be confused with missionary work.