A close mouth catches no flies. 病从口入，祸从口出。

A cock is valiant on his own dunghill. 夜郎自大。

A common danger causes common action. 同仇敌忾。

A constant guest is never welcome. 久住非佳宾，常来不欢迎。

A contented mind is perpetual feast. 知足常乐。

A covetous man is good to none but worse to himself. 贪婪的人对别人毫无好处，对自己却坏处更大。

A crafty knave needs no broker. 狡猾的流氓，不需居间人。

A creaking door hangs long on its hinges. 户枢不蠹。

A discontented man knows not where to sit easy. 不满足者坐无宁时。

A disease known is half cured. 病情确诊断，治病好一半。

A dog will not howl if you beat him with a bone. 骨头打狗狗不叫。

A fair death honours the whole life. 死得光明，终身荣耀。

A fair face may hide a foul heart. 人不可貌相。

A faithful friend is hard to find. 益友难得。

A fall into the pit, a gain in your wit. 吃一堑，长一智。

A father is a treasure, a brother is a comfort, but a friend is both. 父亲是财富，兄弟是安慰，朋友兼而有之。

A fault confessed is half redressed. 承认错误，等于改正一半。

A flow of words is no proof of wisdom. 口若悬河不能作为才智的证明。

A fool always comes short of his reckoning. 愚人常缺算计。

A fool always rushes to the fore. 傻瓜总爱强出头。

A fool and his money are soon parted. 笨蛋难聚财。

A fool attempting to be witty is an object of profoundest pity. 蠢人装聪明，实在最可怜。

A fool can ask more questions than seven wise men can answer. 一愚发问，七智结舌。

A fool knows more in his own house than a wise man in another. 一个蠢材在他自己家里所知的事比一个聪明人在别人家里所知的事要多。

A fool may ask more questions in an hour than a wise man can answer in seven years. 愚者所问，智者难答。

A fool may give a wise man counsel. 愚者千虑，必有一得。

A fool may throw a stone into a well which a hundred wise men cannot pull out. 一愚所失，百智难回。

A fool's bolt may sometimes hit the mark. 愚者千虑，必有一得。

A fool's heart dances on his lips. 愚人心坦荡，挂在嘴唇上。

A fox may grow grey, but never good. 狐狸会变，但本性难移。

A friend exaggerates a man's virtue, an enemy his crimes. 朋友宣扬人的美德，敌人夸大人的罪过。

A friend in court is better than a penny in purse. 曩中有钱，不如朝中有友