The jaws of power are always open to devour, and her arm is always stretched out, if possible, to destroy the freedom of thinking, speaking, and writing.

人生は、運と偶然と、ちょっとの勇気でできている。

The most dangerous phrase in business is "We've always done it this way."

【释义】：早晨能发现昨夜的错误，今日能悔改昨日的过失。  

Mathematics is not a spectator sport. You have to do it to understand it.