1、a friend is a second self。 朋友是另一个我。
2、a true friend is known in the day of adversity。 疾风知劲草，患难见真情。
3、a near friend is better than a far-dwelling kinsman。 远亲不如近邻。
4、A friend in need is a friend indeed。患难朋友才是真朋友。
5、A friend to everybody is a friend to nobody。广交友，无深交。
6、a friend is not so soon gotten as lost。 交友慢，失友快。
7、Better an open enemy than a false friend。明枪易躲，暗箭难防。
8、choose an author as you choose a friend。 选书如择友。
9、a thousand friends are few， one enemy is too many。 朋友千人尚觉少，仇敌一人犹嫌多。
10、A faithful friend is hard to find。益友难得。
11、Friendship multiplies joys and divides griefs。友谊可以增添欢乐，可以分担忧愁。
12、A good book is a best friend who never turns his back upon us。一本好书，莫逆之交。
13、without a friend the world is a wilderness。 没有朋友，世界就等於一片荒野。
14、be slow in choosing a friend； slower in changing。 选择朋友要审慎，摒弃更要审又慎。
15、a life without a friend is a life without a sun。 人生在世无朋友，犹如生活无太阳。
16、A friend in need is a friend indeed。患难见真交。
17、Better without gold than without friends。宁可没有金钱，不可没有朋友。
18、a bosom friend afar brings distant land near。 海内存知己，天涯若比邻。
19、Absence makes the heart grow fonder。久别情深。
20、a friend is best found in adversity。 患难见真友。
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