A clean hand wants no washing.
身正不怕影子斜。
A clear conscience is a soft pillow.
问心无愧，高枕无忧。
A clear conscience is a sure card.
白日不做亏心事，夜半敲门心不惊。
A clear fast is better than a dirty breakfast.
宁为清贫，不为浊富。
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 contented mind is perpetual feast.
知足常乐。
Actions speak louder than words.
事实胜於雄辩。
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 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。
After a storm comes a calm.
否极泰来。
After black clouds, clear weather.
否极泰来。
After death, the doctor.
放马后炮。
A good appetite is a good sauce.
饥不择食。
A good example is the best sermon.
身教胜似言教。
A good face is a letter of recommendation.
好的相貌就是一封推荐的介绍信。
A good fame is better than a good face.
好的名望良友如近亲。
A good marksman may miss.
智者千虑，必有一失。
A good maxim is never out of season.
至理名言不会过时。
