关于友情的英语谚语或名言有很多，以下是一些经典的例子：

A life without a friend is a life without a sun.

人生没有朋友，犹如人生没有了太阳。

A friend is a second self.

朋友乃第二个自我。

Between friends all is common.

朋友间不分彼此。

A friend to all is a friend to none.

滥交者没有朋友。

Set great store by friendship.

情意重千斤。

Old friends and old wine are best.

陈酒味醇，老友情深。

The friendship of a gentleman is insipid as water.

君子之交淡如水。

It is well that there is no one without a fault, for he would not have a friend in the world.

世界上没有不犯错误的人。想交没有错误的朋友，你就没有朋友。

Better an open enemy than a false friend.

明枪易躲，暗箭难防。

The more we love our friends, the less we flatter them.

对朋友爱得越深，奉承得就越少。

A friend in need is a friend indeed.

患难朋友才是真朋友。

True friends are like diamonds - bright, precious and always in style.

真正的友谊如同钻石，永远闪耀且经久不衰。

Friendship is the wine of life； health is its glass.

友谊是生活的美酒，健康是品味它的酒杯。

这些谚语和名言不仅表达了友情的珍贵，还强调了朋友在生活中的重要性。希望这些能对你有所帮助。