天地相互配合,才产生了万物;阴阳相互结合,世界才会变化;行为合乎礼仪,天下才能安定。
冰和炭不能长久放在同一个容器里,寒天和暑天不会同时到来
The most important questions of life are, for the most part, really only problems of probability.