16. We must now determine the limits or bounds of friendship. On this subject I find three opinions proposed, neither of which has my approval,--the first, that we should do for our friends just what we would do for ourselves, the second, that our good offices to our friends should correspond in quantity and quality to those which they perform for us, the third, that one's friends should value him according to his own self-estimate. I cannot give unqualified assent to either of these opinions. The first--that one should be ready to do for his friends precisely what he would do for himself--is inadmissible. How many things there are that we do for our friends which we should never do on our own account!--such as making a request even an entreaty, of a man unworthy of respect or inveighing against some person with a degree of bitterness, nay, in terms of vehement reproach. In fine, we are perfectly right in doing in behalf of a friend things that in our own case would be decidedly unbecoming. There are also many ways in which good men detract largely from their own comfort or suffer it to be impaired, that a friend may have the enjoyment which they sacrifice. The second opinion is that which limits kind offices and good will by the rule of equality. This is simply making friendship a matter of calculation with the view of keeping a debtor and creditor account evenly balanced. To me friendship seems more affluent and generous and not disposed to keep strict watch lest it may give more than it receives and to fear that a part of its due may be spilled over or suffered to leak out or that it may heap up its own measure over full in return. [Footnote: We have here, first, a figure drawn from pecuniary accounts, then one from liquid measure, then one from dry measure--all designed to affix the brand of the most petty meanness on the (so called) friendship which makes it a point neither to leave nor to brook a preponderance of obligation on either side.] But worst of all is the third limit which prescribes that friends shall take a man's opinion of himself as a measure for their estimate and treatment of him. There are some persons who are liable to fits of depression, or who have little hope of better fortune than the present. In such a case, it is the part of a friend, not to hold the position toward his friend which he holds toward himself, but to make the efficient endeavor to rouse him from his despondency, and to lead him to better hope and a more cheerful train of thought. It remains for me then, to establish another limit of friendship. But first let me tell you what Scipio was wont to speak of with the severest censure. He maintained that no utterance could have been invented more inimical to friendship [Footnote: Latin, _inimciorem_ (that is, _in amiciorem_) _amicitiae_.] than that of him who said that one ought to love as if he were going at some future time to hate, nor could he be brought to believe that this maxim came, as was reported