"There is no such thing as a new idea. It is impossible. We simply take a lot of old ideas and put them into a sort of mental kaleidoscope. We give them a turn and they make new and curious combinations."

知识只有在分享时才有价值。

声音是灵魂的镜子。

友谊不在于你认识谁最久，而在于谁走进你的生活说"我在这里支持你"，并且证明了这一点。

"Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding."

It is better to be a human being dissatisfied than a pig satisfied； better to be Socrates dissatisfied than a fool satisfied.