从出生起，人类就肩负着重力的重担。他被固定在地球上。但人类只需沉入水面之下，就能获得自由。

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.

智者的观点是一样的，愚人的观点千差万别。

We are all born mad. Some remain so.