It is impossible to love and to be wise.
爱令智昏。——Francis Bacon
The course of true love never did run smooth.
通向真爱的路从无坦途。——Shakespeare
Where there is marriage without love, there will be love without marriage.
有没有爱情的婚姻，就会有没有婚姻的爱情。——Benjamin Franklin
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
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
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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
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
Real love stories never have endings.
真正的爱情故事从来不会结束。——Richard Bach
A friend is a second self.
朋友是第二个自我。
A friend is best found in adversity.
患难识真友。
To find friendship offer friendship.
以友谊换友谊。
True friendship lasts forever.
真正的友谊恒久不变。
Friendship is like wine---the older the better.
友谊像美酒, 越陈越醇厚。
Fire is the test of gold, adversity of friendship.
烈火试真金, 苦难试友情。
Life without a friend is death without a witness.
没有朋友的生活等于孤独一人死去。
A man is known by the company he keeps.
从其交友知其为人。