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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.
快乐的人,只有快乐的人,是能把今天称为自己所有的那个人。
证明的目的是理解,而不仅仅是验证。
我不遵循规则。我制定规则。