bitter pills may have wholesome effects.良药苦口
do wrong once and you"ll never hear the end of it.一失足成千古恨
every cloud has a silver lining.守得云开见月明
every man has his fault.人孰无过
first come， first served.捷足先登
haste makes waste.欲速则不达
honesty is the best policy.诚实至上
in fair weather prepare for foul.未雨绸缪
knowledge is power.知识就是力量
let bygones be bygone.既往不究
look before you leap.三思而后行
man proposes， god disposes.谋事在人，成事在天
money talks.金钱万能
no gains without pains.吃得苦中苦方为人上人