Without a friend the world is a wilderness.没有朋友，世界就等於一片荒野。
He is rich enough who has true friends.有真朋友的人是富翁。
Friends must part.天下无不散之筵席。
Everything is good when new, but friend when old.新朋友总是好的，但老朋友更珍贵。
A friend is easier lost than found.得朋友难，失朋友易。
A faithful friend is hard to find.知音难觅。
A friend without faults will never be found.没有缺点的朋友是不存在的。
The smell of coin is often the knell of friendship.铜臭味浓往往是友谊的不祥之兆。
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 good friend that speaks well of us behind our backs.背后说好话，才是真朋友。
What is a friend？ A single soul dwelling in two bodies.朋友是什么？两幅躯壳拥有同一个灵魂。
Friendship is like a plant of slow growth.友谊像一株生长缓慢的植物。
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。
A friend to all is a friend to none.滥交者没有朋友。
A friend in need is a friend indeed.患难朋友才是真朋友。
这些谚语涵盖了友谊的珍贵、忠诚、易逝以及相处之道等多个方面，希望这些对你有所帮助。