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。

　　Action is the proper fruit of knowledge. 行动是知识的巧果。

　　Actions speak louder than words. 事实胜于雄辩。

　　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。

　　Admonish your friends in private, praise them in public. 在私底下要忠告你的朋友，在公开场合又表扬你的朋友。

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

　　Adversity is a good discipline. 苦难是磨练人的好机会。

　　Adversity leads to prosperity. 逆境迎向昌盛。

　　Adversity makes a man wise, not rich. 患难使人聪明，但不能致富。

　　Adversity makes strange bedfellows. 身处逆境不择友。

　　Adversity successfully overcome is the highest glory. 成功地克服困难是最大的光荣。

　　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。