Cornered beasts will still fight.
 困兽犹斗 ,狗急跳墙
 
Correct the mistakes if you have committed them, and avoid them if you have not.
 有则改之 ,无则加勉
 
Couch hard arguments in soft words.
 理要硬而话要软
 
Could we see when and where we are to meet again, we would be more tender when we bid our friends goodbye.
 假如我们能预知何时何地重逢 ,和朋友话别时就会更情真
 
Counsel breaks not the head.
 忠告不会打破头 
 
Counsel is no command.
 劝告不是命令 
 
Courage and resolution are the spirit and soul of virtue.
 勇敢和坚定是美德的灵魂 
 
Courage consists, not in the ability of overlooking danger, but in seeing and conquering it.
 勇敢不在于能够忽视危险 ,而在于认清危险,战胜危险
 
Courage is a virtue only so far as it is directed by prudence.
 勇敢只有由审慎指导才能成为美德 
 
Courage is that virtue which champions the cause of right.
 勇敢是支持正义事业的美德 
 
Courage is the ladder on which all the other virtues mount.
 勇气是一架梯子 ,其它美德全靠它爬上去
 C.B.Luce 卢斯
 
Courage without conscience is a wild beast.
 不计道德的勇敢与野兽无异 
 
Courtesy is the inseparable companion of virtue.
 礼貌和美德是分不开的伴侣 
 
Courtesy on one side only lasts not long.
 礼貌靠双方维持
 
Cowards die many times before their deaths.
 胆怯者在真正死亡前已死过多次 
 
Craft must have clothes, but truth loves to go naked.
 诡计定然披着外衣 ,真理却不爱装饰
 
Credit keeps the crown of the causeway.
 守信誉的人不怕走在大街中央 
 
Creditors have better memories than debtors.
 放债的比借债的记性好
 B.Franklin 富兰克林
 
Critics are like brushers of noblemen's clothes.
 批评家好比男仆，为大人物刷去衣服上的灰尘
 
Cross the stream where it is shallowest.
 渡河要挑最浅处 . /从易处着手
 
Cross your t's and dot your i's.
 办事要一丝不苟 
 
Curiosity is ill manners in another's house.
 在别人家里显得好奇是没礼貌的表现
 
Custom is second nature.
 习惯是第二天性。 /习惯成自然
 
Custom makes all things easy.
 凡事成习惯就容易做。 /熟能生巧
 
Custom reconciles us to everything.
 习惯则不怨 
 
Cut your coat according to your cloth.
 看布裁衣