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.

The conversation about coal must move beyond 'pro' or 'anti'—we need solutions, not slogans.

"The world is full of small things that are big enough to break your heart."

城市是一个活生生的有机体。