解释:过去和现在风俗不同,为什么一定要效仿古代?
Train people well enough so they can leave, treat them well enough so they don't want to.
解释:对别人没有恩德,却想有求于人,这是罪过。
真正的挑战不是建造一个便宜的房子,而是建造一个居住成本低的房子。