崇德文教基金會三重區親德青少年班

A clean hand wants no washing. 身正不怕影子斜。

A clear conscience is a soft pillow. 問心無愧，高枕無憂。

A clear conscience is a sure card. 光明磊落，勝券在握。

A clear conscience laughs at false accusations. 白日不做虧心事，夜半敲門心不驚。

A clear fast is better than a dirty breakfast. 寧為清貧，不為濁富。

A close mouth catches no flies. 病從口入，禍從口出。

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

A common danger causes common action. 同仇敵愾。

A constant guest is never welcome. 久住非佳賓，常來不歡迎。

A contented mind is perpetual feast. 知足常樂。