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.

我试图通过我的作品来揭示人类的复杂性。

写作就是呼吸，而呼吸就是生活。

杰作不是完美的，而是完全诚实的。

解释：局势安定的国家，常常是富足的；局势 动乱的国家，常常是贫穷的。