A friend is, as it were, a second self.

Friendship is the only thing in the world concerning the usefulness of which all mankind are agreed.

The shifts of fortune test the reliability of friends.

If a man could mount to heaven and survey the mighty universe, his admiration of its beauties would be much diminished unless he had some one to share in his pleasure

Friendship makes prosperity brighter, while it lightens adversity by sharing its griefs and anxieties. [Lat., Secundas res splendidiores facit amicitia, et adversas partiens communicansque leviores.]

It is a common saying that many pecks of salt must be eaten before the duties of friendship can be discharged. [Lat., Vulgo dicitur multos modios salis simul edendos esse, ut amicitia munus expletum sit.]