1、bitter pills may have blessed effects。
良药苦口利于病。
2、all things are obedient to money.money makes the mare go.
有钱能使鬼推磨。
3、time is money,but money cannot buy time.
一寸光阴一寸金，寸金难买寸光阴。
4、live and learn.
活到老，学到老。
5、a man knows his companion in a long journey and a little inn.
路遥知马力,日久见人心。