It is only shallow peoplewho require years to get rid of an emotion. A man who is master of himself, can end a sorrow as easily as he can invent a pleasure.
Paint with your heart, and your hands will follow.
The choice for mankind lies between freedom and happiness and for the great bulk of mankind, happiness is better.
领导力在于因你的存在而让他人变得更好，并确保这种影响在你离开后依然持续。
我没有任何特别的秘诀（用于开发新的证明）……这就是为什么做研究既具有挑战性又具有吸引力的原因。这就像在丛林中迷路，试图利用你能收集到的所有知识来想出一些新的技巧，并且如果运气好的话，你可能会找到出路。
I don't have any particular recipe [for developing new proofs] ... It is the reason why doing research is challenging as well as attractive. It's like being lost in a jungle and trying to use all the knowledge that you can gather to come up with some new tricks, and with some luck you might find a way out.
语言中最具破坏性的一句话是：“我们一直都是这样做的。”
要发出光芒，必须忍受燃烧。
人类对于不公正的行为加以指责，并非因为他们愿意做出这种行为，而是惟恐自己会成为这种行为的牺牲者。