A good book is the best of friends, the same today and forever 好书如挚友, 情谊永不渝。

 

A man knows his companion in a long journey and a little inn 路遥知马力, 日久见人心。

 

a friend is best found in adversity 患难见真友。

 

a friend is never known till a man has need 不到患难时，永远不能认识真正的朋友。