A word spoken is past recalling.
一言既出，驷马难追。

A wise head makes a close mouth.
真人不露相，露相非真人。

A straight foot is not afraid of a crooked shoe.
身正不怕影子斜。

A stitch in time saves nine.
小洞不补，大洞吃苦。

A still tongue makes a wise head.
寡言者智。

A sound mind in a sound body.
健全的精神寓于健康的身体。

A snow year, a rich year.
瑞雪兆丰年。

An ounce of prevention is worth a pound of cure.
预防为主，治疗为辅。

As a man sows, so he shall reap.
种瓜得瓜，种豆得豆。

A single flower does not make a spring.
一花独放不是春，百花齐放春满园。

A rolling stone gathers no moss.
滚石不生苔，转业不聚财。

Blood will have blood.
血债血偿。

Books and friends should be few but good.
读书如交友，应求少而精。

Business is business.
公事公办。

Business is the salt of life.
事业是人生的第一需要。

By reading we enrich the mind, by conversation we polish it.
读书使人充实，交谈使人精明。

Cannot see the wood for the trees.
一叶障目，不见[wiki]泰山[/wiki]。

Care and diligence bring luck.
谨慎和勤奋才能抓住机遇。

Caution is the parent of safety.
小心驶得万年船。

Cheats never prosper.
骗人发不了财。