Therefore let us exclude such persons altogether from our discourse; and let us ourselves hold this opinion, that the sentiment of loving and the attachment of kind feelings are produced by nature when the evidence of virtue has been established; and they who have eagerly sought the last-named draw nigh and attach themselves to it, that they may enjoy the friendship and character of the individual they have begun to love, and that they may be commensurate and equal in affection, and more inclined to confer a favor than to claim any return. And let this honorable struggle be maintained between them; so not only will the greatest advantages be derived from friendship, but its origin from nature rather than from a sense of weakness will be at once more impressive and more true. For if it were expediency that cemented friendships, the same when changed would dissolve them; but because nature can never change, therefore true friendships are eternal.... Listen, then, my excellent friends, to the discussion which was very frequently held by me and Scipio on the subject of friendship; altho he indeed used to say that nothing was more difficult than that friendship should continue to the end of life; for it often happened either that the same course was not expedient to both parties or that they held different views of politics; he remarked also that the characters of men often changed, in some cases by adversity, in others by old age becoming oppressive; and he derived an authority for such notions from a comparison with early life, because the strongest attachments of boys are constantly laid aside with the praetexta; even if they should maintain it to manhood, yet sometimes it is broken off by rivalry, for a dowried wife, or some other advantage which they can not both attain. And even if men should be carried on still further in their friendship, yet that feeling is often undermined should they fall into rivalry for preferments; for there is no greater enemy to friendship than covetousness of money, in most men, and even in the best, an emulous desire of high offices and glory, in consequence of which the most bitter enmities have often arisen between the dearest friends. For great dissensions, and those in most instances justifiable, arise when some request is made of friends which is improper, as, for instance, that they should become either the ministers of their lust or their supporters in the perpetration of wrong; and they who refuse to do so, it matters not however virtuously, yet are accused of discarding the claims of friendship by those persons whom they are unwilling to oblige; but they who dare to ask anything of a friend, by their very request seem to imply that they would do anything for the sake of that friend; by the complaining of such persons, not only are long-established intimacies put an end to, but endless animosities are engendered. All these many causes, like so many fatalities, are ever threatening