We live in the best of all possible worlds because it was chosen from all possible worlds.

人生要开心，否则只会痛苦。

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.

你沾沾自喜，别人乐于喜欢你；你攻击你周围的某个人，其他的人哈哈大笑；但倘若你解剖你自己的灵魂，所有的人就会嗷嗷叫。——作者原注

The success of an enterprise cannot be achieved without the continuous pursuit of technology and strict control of quality.

Agriculture is the backbone of civilization, and we must treat it with the respect it deserves.