关于称赞朋友的英语谚语，综合多个权威来源整理如下：

一、经典赞美类

A friend is a treasure, a brother is a comfort, but a friend is both.

父亲是财富，兄弟是安慰，朋友则兼具两者。2. Old friends and old wine are best.

陈酒味醇，老友情深。强调长久的友情如同陈年美酒，越久越珍贵。3. The friendship of a gentleman is insipid as water.

君子之交淡如水，形容高尚友情质朴无华。4. A friend is a second self.

朋友乃第二个自我，体现亲密无间的信任与共鸣。二、品质颂扬类

Between friends all is common.

朋友间不分彼此，强调亲密关系的无边界性。2. A true friend is known in the day of adversity.

困难时刻才能显现真正的朋友，突出患难与共的特质。3. A friend to all is a friend to none.

滥交者没有真正的朋友，警示交友需谨慎。三、相处智慧类

A friend in need is a friend indeed.

需要时出现的才是真朋友，强调患难见真情。2. It is a friend who remembers your birthday, not just your achievements.

真正的朋友会记住你的细节而非仅关注成就，体现贴心关怀。3. 损友敬而远，益友敬而亲。

对有害的朋友保持距离，对有益的朋友则亲近有加。这些谚语通过不同角度展现了友情的珍贵与美好，既包含对时间沉淀的赞美，也蕴含对品质与行为的期许。