A bad beginning makes a bad ending.

　　不善始者不善终。

　　A bird in the hand is worth than two in the bush.

　　一鸟在手胜过双鸟在林。

　　A close mouth catches no flies.

　　病从口入。

　　A constant guest is never welcome.

　　常客令人厌。

　　Actions speak louder than words.

　　事实胜于雄辩。

　　Adversity makes a man wise, not rich.

　　逆境出人才。

　　A fox may grow gray, but never good.

　　江山易改，本性难移。

　　A friend in need is a friend indeed.

　　患难见真情。

　　A good beginning is half done.

　　良好的开端是成功的一半。

　　A leopard cannot change its spots.

　　积习难改。

　　A man can do no more than he can.

　　凡事都应量力而行。

　　A miss is as good as a mile.

　　失之毫厘，差之千里。