A friend is a second self. 朋友是第二个自我。

A friend is easier lost than found.得朋友难，失朋友易。

A friend is never known till a man has need.需要之时方知友。

A friend that you buy with presents will be bought from you.

A friend without faults will be found.没有十全十美的朋友。

A hedge between keeps friendship green.君子之交淡如水（字面：朋友之间有所界限 才能让友谊之树长青）。

A life without a friend is a life without a sun. 人生没有了朋友就犹如失去了阳光。

Without words, in friendship, all thoughts, all desires, all expectations, are silent joy and sharing.在友谊里，不用言语，一切的思想，一切的愿望，一切的希冀，都在无声的欢乐中发生而共享了。 --（黎）纪伯伦

A man should keep his friendship in constant repair. 只有经常“浇灌”，方能保持友谊天长地久。

A man should keep his friendship in constant repair. ---Samuel johnaon, British writer 人应该经常维修友谊。 ---英国作家 约翰逊

A true friend is for ever a friend. ---Grorge Macdonald, British novelist 真正的朋友是永远的朋友。

Admonish your friends privately, but praise them openly. 告诫朋友要在私下里，但是夸奖朋友要公开。

Animals are such agreeable friends --they ask no questions, they pass no criticism. ---George Eliot, British novelist 动物是极易相处的朋友，它们不提问，也不批评。 ---英国小说家 艾略特