A brother may not be a friend, but a friend will always be a brother. 兄弟未必是朋友，而朋友总是兄弟。 ——Benjamin Franklin

其实两个人最好的状态就是朋友之上恋人未满。

If you would keep your secret from an enemy, tell it not to a friend. 如果不想让你的敌人得知你的秘密，就不要把秘密告诉你的朋友。 ——Benjamin Franklin

In prosperity our friends know us; in adversity we know our friends. 在顺境中，朋友结识了我们；在逆境中，我们了解了朋友。——C.Collins

A common enemy does not a true friendship make. 有共同的敌人并不能造就真正的朋友。 ——Richard Stengel

Don't make friends who are comfortable to be with. Make friends who will force you to lever yourself up. 别交那些在一起让你舒舒服服的朋友。交那些让你不得不长进的朋友。 ——Thomas J.Watson

A friend is a present which you give yourself. 朋友是你送给自己的一份礼物。 ——R.L.Stevenson

A friend that you buy with presents will be bought from you. 用礼物“买来”的朋友终会被买走。

Friendships last when each friend thinks he has a slight superiority over the other. 当朋友之间互相都觉得比对方稍稍优越时，友谊便能长久下去。 ——Honore de Balzac

A true friend is one who overlooks your failures and tolerates your successes. 真正的朋友从不追究你的过错，也从不妒忌你的成功。——Doug Larson

If you want an accounting of your worth, count your friends. 如果你想估算一下你的价值，数一数你的朋友吧。——Merry Browne