无力感会腐化。绝对的无力感会绝对地腐化。

好的悬疑故事应该让读者一直猜测到最后，但所有线索都必须存在。

农业中唯一不变的就是变化——拥抱它吧。

最可持续的竞争优势是比竞争对手学得更快。

面对失败时的坚持将成功的科学家与其他人区分开来。

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.