But I must at the very beginning lay down this principle—friendship can only exist between good men. I do not, however, press this too closely, like the philosophers who push their definitions to a superfluous accuracy.
We mean then by the “good” those whose actions and lives leave no question as to their honour, purity, equity, and liberality; who are free from greed, lust, and violence; and who have the courage of their convictions. … Such men as these being generally accounted “good,” let us agree to call them so, on the ground that to the best of human ability they follow nature as the most perfect guide to a good life.
Now this truth seems clear to me, that nature has so formed us that a certain tie unites us all, but that this tie becomes stronger from proximity. So it is that fellow-citizens are preferred in our affections to foreigners, relations to strangers; for in their case Nature herself has caused a kind of friendship to exist, though it is one which lacks some of the elements of permanence. Friendship excels relationship in this, that whereas you may eliminate affection from relationship, you cannot do so from friendship. Without it relationship still exists in name, friendship does not. You may best understand this friendship by considering that, whereas the merely natural ties uniting the human race are indefinite, this one is so concentrated, and confined to so narrow a sphere, that affection is ever shared by two persons only, or at most by a few.
Now friendship may be thus defined: a complete accord on all subjects human and divine, joined with mutual good will and affection. And with the exception of wisdom, I am inclined to think nothing better than this has been given to man by the immortal gods. There are people who give the palm to riches or to good health, or to power and office, many even to sensual pleasures. This last is the ideal of brute beasts; and of the others we may say that they are frail and uncertain, and depend less on our own prudence than on the caprice of fortune. Then there are those who find the “chief good” in virtue. Well, that is a noble doctrine. But the very virtue they talk of is the parent and preserver of friendship, and without it friendship cannot possibly exist.
Let us, I repeat, use the word virtue in the ordinary acceptation and meaning of the term, and do not let us define it in high-flown language. Let us account as good the persons usually considered so, such as Paulus, Cato, Gallus, Scipio, and Philus. Such men as these are good enough for everyday life; and we need not trouble ourselves about those ideal characters which are nowhere to be met with.
Well, between men like these the advantages of friendship are almost more than I can say. To begin with, how can life be worth living, to use the words of Ennius, which lacks that repose which is to be found in the mutual good will of a friend? What can be more delightful than to have some one to whom you can say everything with the same absolute confidence as to yourself? Is not prosperity robbed of half its value if you have no one to share your joy? On the other hand, misfortunes would be hard to bear if there were not some one to feel them even more acutely than yourself. In a word, other objects of ambition serve for particular ends—riches for use, power for securing homage, office for reputation, pleasure for enjoyment, health for freedom from pain and the full use of the functions of the body. But friendship embraces innumerable advantages. Turn which way you please, you will find it at hand. It is everywhere; and yet never out of place, never unwelcome. Fire and water themselves, to use a common expression, are not of more universal use than friendship. I am not now speaking of the common or modified form of it, though even that is a source of pleasure and profit, but of that true and complete friendship which existed between the select few who are known to fame. Such friendship enhances prosperity, and relieves adversity of its burden by halving and sharing it.