Two dogs strive for a bone, and a third runs away with it.

　　鷸蚌相爭，漁翁得利。

　　Two heads are better than one.

　　一個好漢三個幫。

　　Two of a trade seldom agree.

　　同行是冤家。

　　Two wrongs do not make a right.

　　別人錯了，不等于你對了。

　　Unity is strength.

　　團結就是力量。

　　Unpleasant advice is a good medicine.

　　忠言逆耳利于行。

　　Until all is over one's ambition never dies.

　　不到黃河心不死。

　　Venture a small fish to catch a great one.

　　吃小虧占大便宜。

　　Virtue is fairer far than beauty.

　　美德遠遠勝過美貌。

　　Walls have ears.

　　小心隔墻有耳。

　　Wash your dirty linen at home.

　　家丑不可外揚。

　　Water dropping day by day wears the hardest rock away.

　　滴水穿石。

　　Wealth is nothing without health.

　　失去健康，錢再多也沒用。

　　We know not what is good until we have lost it.

　　好東西，失去了才明白。

　　Well begun is half done.

　　好的開始，是成功的一半。

　　We never know the worth of water till the well is dry.

　　井干方知水可貴。