Friendship

Friendship is cherished by people in all cultures and there are a large number of idioms and proverbs related to it in every language.Here is a list of English idioms of this kind:

A friend in need is a friend indeed.

患难见真情。

A friend is easier lost than found.

得朋友难，失朋友易。 

A friend to all is a friend to none. / A friend to  everybody is a friend to nobody.滥交友者无友。

A friend without faults will never be found.

没有十全十美的朋友。

Birds of a feather flock together.

物以类聚，人以群分。

Books and friends should be few but good.

读书如交友，应求少而精。

Even the best friends must part.

朋友虽好，总有一别。

Everything is good when new, but friends when old.

东西是新的好，朋友是老的亲。

False friends are worse than open enemies.

虚伪的朋友比公开的敌人更坏。

Old friends and old wine are best.

陈酒味醇，老友情深。