I gave it, and it will be mere fickleness to disappoint you; but if something new has taken place in the meanwhile, why should you wonder at my intentions being changed when the conditions under which I gave the promise are changed? Put everything back as it was, and I shall be the same as I was. We enter into recognizances to appear, yet if we fail to do so an action will not in all cases lie against us, for we are excused for making default if forced to do so by a power which we cannot resist. XL. You may take the same answer to the question as to whether we ought in all cases to show gratitude for kindness, and whether a benefit ought in all cases to be repaid. It is my duty to show a grateful mind, but in some cases my own poverty, in others the prosperity of the friend to whom I owe some return, will not permit me to give it. What, for instance, am I, a poor man, to give to a king or a rich man in return for his kindness, especially as some men regard it as a wrong to have their benefits repaid, and are wont to pile one benefit upon another? In dealing with such persons, what more can I do than wish to repay them? Yet I ought not to refuse to receive a new benefit, because I have not repaid the former one. I shall take it as freely as it is given, and will offer myself to my friend as a wide field for the exercise of his good nature: he who is unwilling to receive new benefits must be dissatisfied with what he has already received. Do you say, "I shall not be able to return them?" What is that to the purpose? I am willing enough to do so if opportunity or means were given me. He gave it to me, of course, having both opportunity and means: is he a good man or a bad one? if he is a good man, I have a good case against him, and I will not plead if he be a bad one. Neither do I think it right to insist on making repayment, even though it be against the will of those whom we repay, and to press it upon them however reluctant they may be; it is not repayment to force an unwilling man to resume what you were once willing to take. Some people, if any trifling present be sent to them, afterwards send back something else for no particular reason, and then declare that they are under no obligation; to send something back at once, and balance one present by another, is the next thing to refusing to receive it. On some occasions I shall not return a benefit, even though I be able to do so. When? When by so doing I shall myself lose more than he will gain, or if he would not notice any advantage to himself in receiving that which it would be a great loss to me to return. The man who is always eager to repay under all circumstances, has not the feeling of a grateful man, but of a debtor; and, to put it shortly, he who is too eager to repay, is unwilling to be in his friend's debt; he who is unwilling, and yet is in his friend's debt, is ungrateful. BOOK V. I.