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.

你唯一的限制就是你相信的限制。

值得读的书不是为你思考的书，而是让你思考的书。

路途再近，你不走，也不会到达。事情再小，不去做也不可能完成。

如果一个聪明人干了一件蠢事，那就不会是一件小小的蠢事。