Because of this, if mental anguish happens to the wise man (and it certainly happens, unless we think that humanity is eradicated from his mind), what is the reason why we should take friendship out of life altogether, unless we tend to do something disgusting as a result of it? For without the ability for the mind to be moved, what is the difference -- I don't say between people and animals -- but between people and tree trunks, or rocks, or anything else of this sort? So these people should not be listened to, who want virtue to be something hard like iron - indeed it is with many things, but in friendship it is so soft and flexible, that it practically overflows when good things happen and is crushed by misfortunes. Because of this, that anguish, which must often be exercised for a friend, is not so powerful that it can remove friendship from life, any more than the virtues should be repudiated because they cause more than a little concern and trouble.
But since friendship is pulled together, as I said above, if the significance of one's virtue is illuminated by something to which a similar mind aligns and attaches itself, then, when this happens, love must arise.