All mankind... being all equal and independent, no one ought to harm another in his life, health, liberty, or possessions.

如果让我用一句话总结如何改变世界，我会说，努力工作，为那些真正激动人心的事物。

过去并未死去；它甚至还未过去。

You think it will never happen to you, that it cannot happen to you, that you are the only person in the world to whom none of these things will ever happen, and then, one by one, they all begin to happen to you, in the same way they happen to everyone else.

真理的概念在任何足够强大以包含算术的形式系统中都是不可定义的。

To live is the rarest thing in the world. Most people exist, that is all.

The best time to sell a stock is almost never.