It is difficult, if not impossible, to define the limits which reason should impose on the desire for wealth; for there is no absolute or definite amount of wealth which will satisfy a man. The amount is always relative, that is to say, just so much as will maintain the proportion between what he wants and what he gets; for to measure a man's happiness only by what he gets, and not also by what he expects to get, is as futile as to try and express a fraction which shall have a numerator but no denominator. A man never feels the loss of things which it never occurs to him to ask for; he is just as happy without them; whilst another, who may have a hundred times as much, feels miserable because he has not got the one thing he wants. In fact, here too, every man has an horizon of his own, and he will expect as much as he thinks it is possible for him to get. If an object within his horizon looks as though he could confidently reckon on getting it, he is happy; but if difficulties come in the way, he is miserable. What lies beyond his horizon has no effect at all upon him. So it is that the vast possessions of the rich do not agitate the poor, and conversely, that a wealthy man is not consoled by all his wealth for the failure of his hopes. Riches, one may say, are like seawater; the more you drink the thirstier you become; and the same is true of fame. The loss of wealth and prosperity leaves a man, as soon as the first pangs of grief are over, in very much the same habitual temper as before; and the reason of this is, that as soon as fate diminishes the amount of his possessions, he himself immediately reduces the amount of his claims. But when misfortune comes upon us, to reduce the amount of our claims is just what is most painful; once that we have done so, the pain becomes less and less, and is felt no more; like an old wound which has healed. Conversely, when a piece of good fortune befalls us, our claims mount higher and higher, as there is nothing to regulate them; it is in this feeling of expansion that the delight of it lies. But it lasts no longer than the process itself, and when the expansion is complete, the delight ceases; we have become accustomed to the increase in our claims, and consequently indifferent to the amount of wealth which satisfies them. There is a passage in the Odyssey[2] illustrating this truth, of which I may quote the last two lines: