Nicomachean Ethics

Next would seem properly to follow a dissertation on Friendship: because, in the first place, it is either itself a virtue or connected with virtue; and next it is a thing most necessary for life, since no one would choose to live without friends though he should have all the other good things in the world: and, in fact, men who are rich or possessed of authority and influence are thought to have special need of friends: for where is the use of such prosperity if there be taken away the doing of kindnesses of which friends are the most usual and most commendable objects? Or how can it be kept or preserved without friends? because the greater it is so much the more slippery and hazardous: in poverty moreover and all other adversities men think friends to be their only refuge.

Furthermore, Friendship helps the young to keep from error: the old, in respect of attention and such deficiencies in action as their weakness makes them liable to; and those who are in their prime, in respect of noble deeds (“They together going,” Homer says, you may remember), because they are thus more able to devise plans and carry them out.

Again, it seems to be implanted in us by Nature: as, for instance, in the parent towards the offspring and the offspring towards the parent (not merely in the human species, but likewise in birds and most animals), and in those of the same tribe towards one another, and specially in men of the same nation; for which reason we commend those men who love their fellows: and one may see in the course of travel how close of kin and how friendly man is to man.

Furthermore, Friendship seems to be the bond of Social Communities, and legislators seem to be more anxious to secure it than Justice even. I mean, Unanimity is somewhat like to Friendship, and this they certainly aim at and specially drive out faction as being inimical.

Again, where people are in Friendship Justice is not required;[1] but, on the other hand, though they are just they need Friendship in addition, and that principle which is most truly just is thought to partake of the nature of Friendship.

Lastly, not only is it a thing necessary but honourable likewise: since we praise those who are fond of friends, and the having numerous friends is thought a matter of credit to a man; some go so far as to hold, that “good man” and “friend” are terms synonymous.