J.R.R. Tolkien: "A hunted man sometimes wearies of distrust and longs for friendship."

Two are better than one, because they have a good reward for their labor.

As iron sharpens iron, so one person sharpens another.

In giving advice, seek to help, not to please, your friend.

As a matter of self-preservation, a man needs good friends or ardent enemies, for the former instruct him and the latter take him to task.

Of all the things which wisdom provides to make us entirely happy, much the greatest is the possession of friendship.

Wishing to be friends is quick work, but friendship is a slow-ripening fruit.