人活着，就应该坦坦荡荡，明明白白，无所愧疚。
Another thing, of course, is that life will have terrible blows in it, horrible blows, unfair blows.It doesn't matter.And some people recover and others don't…
I believe that we are lost here in America, but I believe we shall be found.
A mathematician is a device for turning coffee into theorems.
计算机科学中的挑战不仅仅是解决问题，而是找到正确的问题来解决。
上帝是完美的诗人。