孔子说:“经常学习,不也喜悦吗?远方来了朋友,不也快乐吗?得不到理解而不怨恨,不也是君子吗?”
Mathematics is the art of giving the same name to different things.
An eye for an eye will only make the whole world blind.
We have to continually be jumping off cliffs and developing our wings on the way down.