1 Corinthians 15:11
Come, let me show you the contrary too, that even if from a higher station you should bring down to a lower one him that has consideration, you will not cast him into dejection and grief. And if you will, let us descend the same ladder, and do thou bring down the satrap from his throne and in supposition deprive him of that dignity. I say that he will not on this account vex himself, if he choose to bear in mind the things of which I have spoken. For he will not reckon up the things of which he has been deprived, but what he has still, the glory arising from his office. But if you take away this also, he will reckon up them who are in private stations and have never ascended to such sway, and for consolation his riches will suffice him. And if you also cast him out again from this, he will look to them that have a moderate estate. And if you should take away even moderate wealth, and should allow him to partake only of necessary food, he may think upon them that have not even this, but wrestle with incessant hunger and live in prison. And even if you should bring him into that prison-house, when he reflects on them that lie under incurable diseases and irremediable pains, he will see himself to be in much better circumstances. And as the scavenger before mentioned not even on being made a king will reap any cheerfulness, so neither will this man ever vex himself if he become a prisoner. It is not then wealth that is the foundation of pleasure, nor poverty of sadness, but our own judgment, and the fact, that the eyes of our mind are not pure, nor are fixed anywhere and abide, but without limit flutter abroad. And as healthy bodies, if they be nourished with bread alone, are in good and vigorous condition: but those that are sickly, even if they enjoy a plentiful and varied diet, become so much the weaker; so also it is wont to happen in regard of the soul. The mean spirited, not even in a diadem and unspeakable honors can be happy: but the denying, even in bonds and fetters and poverty, will enjoy a pure pleasure.
10. These things then bearing in mind, let us ever look to them that are beneath us. There is indeed, I grant, another consolation, but of a high strain in morality, and mounting above the grossness of the multitude. What is this? That wealth is naught, poverty is naught, disgrace is naught, honor is naught, but for a brief time and only in words do they differ from each other. And along with this there is another soothing topic also, greater than it; the consideration of the things to come, both evil and good, the things which are really evil and really good, and the being comforted by them. But since many, as I said, stand aloof from these doctrines, therefore were we compelled to dwell on other topics, that in course we might lead on to them the receivers of what had been said before.
Let us then, taking all these things into account, by every means frame ourselves aright, and we shall never grieve at these unexpected things. For neither if we should see men rich in a picture, should we say they were to be envied, any more than on seeing poor men there depicted we should call them wretched and pitiable: although those are surely more abiding than they whom we reckon wealthy. Since one abides rich in the picture longer than in the nature itself of things. For the one often lasts, appearing such, even to a hundred years, but the other sometimes, not having had so much as a year to live at his ease in his possessions, has been suddenly stripped of all. Meditating then on all these things, let us from all quarters build up cheerfulness as an outwork against our irrational sorrow, that we may both pass the present life with pleasure, and obtain the good things to come, through the grace and mercy of our Lord Jesus Christ, with Whom to the Father, with the Holy Ghost, be glory, power, honor, now and forever, and world without end. Amen.
Source: Homilies on First Corinthians (New Advent)