历史是由大大小小的时刻组成的。
勇气不是没有恐惧，而是战胜恐惧。
Life is made up of sobs, sniffles, and smiles, with sniffles predominating.
当没有人相信你的时候，你必须相信自己。
艺术是赋予无形以形式的方式。
In mathematics, the art of proposing a question must be held of higher value than solving it.
The natural effort of every individual to better his own condition， when suffered to exert itself with freedom and security， is so powerful a principle that it is alone， and without any assistance， not only capable of carrying on the society to wealth and prosperity but of surmounting a hundred impertinent obstructions with which the folly of human laws too often encumbers its operations.