Saying is one thing and doing another.

言行不一。

Seeing is believing.

眼见为实。

Seek the truth from facts.

实事求是。

Send a wise man on an errand, and say nothing to him.

智者当差，不用交代。

Set a thief to catch a thief.

以贼捉贼。

Short accounts make long friends.

好朋友勤算账。

Something is better than nothing.

聊胜于无。

Soon learn, soon forgotten.

学得快，忘得快。

Soon ripe, soon rotten.

熟得快，烂得快。

Speech is silver, silence is gold.

能言是银，沉默是金。