国君若真的希望人口多而不希望人口少的话,如果要蓄养姬妾,就不能不节制。[说明∶老百姓也得有老婆生孩子,别抢人家的老婆] 
Happiness ain't a thing in itself --- it's only a contrast with something that ain't pleasant. That's all it is.
The world is all that is the case.