a poster i found.

肚量大一点，嘴巴甜一点

行动快一点，效率高一点

脑筋活一点，理由少一点

做事多一点，脾气小一点

说话轻一点，微笑露一点

语言似箭， 不可轻发

一经入耳， 有力难拔

From a more mundane point of view, this seems to be the rules of living a happier and contented life.

Words are powerful, but it would be folly to be concerned about the tongues of men.