1.Time reveals (discloses) all things. 
万事日久自明。 

2.A friend in need is a friend indeed. 
患难朋友才是真朋友。 

3.A faithful friend is hard to find.
益友难得。 

4.A father is a treasure, a brother is a comfort, but a friend is both.
父亲是财富，兄弟是安慰，朋友兼而有之。  

5.A friend exaggerates a man's virtue, an enemy hiscrimes.
朋友宣扬人的美德，敌人夸大人的罪过。  

6.A friend in court is better than a penny in purse.
囊中有钱，不如朝中有友。  

7.Both together do best of all.
二人同心,无往不胜。 

8.Friendship is a love without wings.
友谊是一种无形的爱。 

9.A life without a friend is a life without a sun.
人生没有朋友, 犹如人生没有了太阳。 

10.Set great store by friendship.
情意重千斤。 

11.A friend is a second self.
朋友乃第二个自我。 

12.Between friends all is common.
朋友之间不分彼此。 

13.Old friends and old wine are best. 
陈酒味醇, 老友情深。 

14.The friendship of a gentleman is insipid as water.
君子之交淡如水。 

15.A bosom friend afar brings a distant land near.
海内存知己, 天涯若比邻。 

16.Most men's friendships are too inarticulate.
人的友谊是无法言喻的。 

17.Friendship is like a plant of slow growth.
友谊像生长着的植物, 是慢慢地建立起来的。 

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

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

20.It is only the greathearted who can be true friends; the mean and the cowardly can never know what true friendship is.
只有伟大胸怀的人才是真正的朋友; 平庸和怯懦之辈决不可能了解真正友谊的含义。