I never write Metropolis for seven cents because I can get the same price for city. I never write policeman because I can get the same money for cop.
出门没有衣服,进家没有粮食,内心积有耻辱之感,就会一起来发动暴乱,而且无法禁止。 
The world owes all its onward impulses to men ill at ease; the happy man inevitably confines himself within ancient limits.
The harder the battle, the sweeter the victory.
"Books, which we mistake for consolation, only add depth to our sorrow."
Innovation is the eternal driving force of enterprise development, without innovation there is no future.
Banks exist because they help mitigate problems created by information asymmetries.