A bad beginning makes a bad ending.不善始者不善终。 A bad workman always blames his tools.不会撑船怪河弯。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 fall into a pit, a gain in your wit.吃一堑，长一智。A fox may grow gray, but never good.江山易改，本性难移。A friend in need is a friend
