A good medicine tastes bitter.

良药苦口。

A good wife health is a man's best wealth.

妻贤身体好是男人最大的财富。

A great talker is a great liar.

说大话者多谎言。

A hedge between keeps friendship green.

君子之交淡如水。

A joke never gains an enemy but loses a friend.

戏谑不能化敌为友，只能使人失去朋友。

A leopard cannot change its spots.

积习难改。

A liar is not believed when he speaks the truth.

说谎者即使讲真话也没人相信。

A light heart lives long.

静以修身。

A little body often harbors a great soul.

浓缩的都是精品。

A little knowledge is a dangerous thing.

一知半解，自欺欺人。