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