A bosom friend afar brings a distant land near.

海内存知己, 天涯若比邻。

Most men's friendships are too inarticulate.

人的友谊是无法言喻的。

Friendship is like a plant of slow growth.

友谊像生长着的植物, 是慢慢地建立起来的。

A good book is the best of friends, the same today and forever.

好书如挚友, 情谊永不渝。

A man knows his companion in a long journey and a little inn.

路遥知马力, 日久见人心。