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
Be slow in choosing a friend, slower in changing.---Benjamin Franklin, American pesident 选择朋友要谨慎，换朋友更要谨慎。 ---美国总统 富兰克林
Be slow in choosing a friend; slower in changing. 选择朋友要审慎，摒弃更要审又慎。
Because friendships enhance our lives,it is important to cultivate them. 培植友谊十分重要，因为友谊能提高生活的价值。
A friend is easier lost than found 得朋友难，失朋友易。
A faithful friend is hard to find.知音难觅。
A friend is never known till a man has need 需要之时方知友。
A friend without faults will never be found 没有十全十美的朋友。
A joke never gains an enemy but loses a friend 戏谑不能化敌为友，只能使人失去朋友。
Between friends all is common 朋友之间不分彼此。