1. Friendship the older it grows the stronger it is.

友谊地久天长

2.A friend is best found in adversity

患难见真友。

3.A friend in court is better than a penny in purse. 

囊中有钱，不如朝中有友。

4.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。

5.Don’t ask others to also do not allow others to do the dirty things, as a principle of friendship

既不请求别人也不答应别人去做卑鄙的事情，为友谊的一项原则

6. Better lose a jest than a friend

宁可不说一句俏皮话，以免得罪朋友们。

7. Choose an author as you choose a friend

选书如择友。

8.good book is a best friend who never turns his back upon us.

9.He that has a full purse never wants a friend

只要袋里有，不愁没朋友。