"The essence of mathematics is not to make simple things complicated, but to make complicated things simple."

Be less curious about people and more curious about ideas.

有一个人从天堂来到人间旅游，他所使用的是有效三十天的减价票，他试图要把他的回程票卖掉。

自然知识的改进者绝对拒绝承认所谓的权威。