But how is it the beginning of pride, not to know the Lord? Justly. For he who knows God as he ought to know Him, he who knows that the Son of God humbled Himself so much, is not lifted up. But he who knows not these things, is lifted up. For pride anoints him unto arrogance. For tell me, whence is it that they who make war upon the Church say that they know God? Is it not from arrogance? See into what a precipice it plunges them, not to know the Lord! For if God loves a contrite spirit, He on the other hand “resists the proud, and gives grace to the humble.” There is therefore no evil like pride. It renders a man a demon, insolent, blasphemous, perjured, and makes him desirous of deaths and murders. The proud man always lives in troubles, is always angry, always unhappy. There is nothing which can satiate his passion. If he should see the king stooping down to him, and prostrating himself, he is not satisfied, but is the more inflamed. For as the lovers of money, the more they receive, want so much the more, so also the proud, the more honor they enjoy, the more they desire. For their passion is increased; for a passion it is, and a passion knows not limit, but then stops when it has slain its possessor. Do you not see that drunkards are always thirsty? For it is a passion, not the desire of nature, but some perverted disease. Do you not see how those who are affected with bulimy, as it is called, are always hungry? For it is a passion, as the children of the physicians say, already exceeding the bounds of nature. The busy-bodies, and the over-curious, whatever they have learned, do not stop. For it is a passion, and has no limit. Again, they who delight in fornication, they too cannot desist. “To a fornicator,” it is said, “all bread is sweet.” He will not cease, till he is devoured. For it is a passion.
But they are indeed passions, not however incurable, but admitting of cure, and much more than bodily affections. For if we will, we can extinguish them. How then can a man extinguish pride? By knowing God. For if it arises from not knowing God, if we know Him, all pride is banished. Think of Hell. Think of those who are much better than yourself. Think of your sins. Think for how many things you deserve punishment from God. If you think of these, you will soon bring down your proud mind, you will soon bend it. But can you not do these things? Are you too weak? Consider things present, human nature itself, the nothingness of man! When you see a dead body carried through the market-place, orphan children following it, a widow beating her breast, servants bewailing, friends looking dejected, reflect upon the nothingness of things present, and that they differ not from a shadow, or a dream.
Does this not suit you? Think of those who are very rich, who perish anyhow in war; look round on the houses, that belonged to the great and illustrious, and are now leveled to the ground. Consider how mighty they were, and now not even a memorial of them is left. For, if you will, every day you may find examples of these things— the successions of rulers—the confiscations of rich men's goods. “Many tyrants have sat upon the ground— and he who was never thought on, has worn a diadem.” Do not these things happen every day? Do not our affairs resemble a kind of wheel? Read, if you will, both our own (books), and those without: for they also abound in such examples. If you despise ours, and this from pride; if you admire the works of philosophers, go even to them. They will instruct you, relating ancient calamities, as will poets, and orators, and sophists, and all historians. From every side, if you will, you may find examples.
But if you will none of these things, reflect upon our very nature, of what it consists, and wherein it ends. Consider, when you sleep, of what worth are you? Will not even a little beast be able to destroy you? For often a little animal falling from the roof has deprived many persons of sight, or has been the cause of some other danger. But what? Are you not less than all beasts? But what do you say? That you excel in reason? But behold, you have not reason: for pride is a sign of the want of reason. And for what, tell me, are you high-minded after all? Is it upon the good constitution of your body? But the prize of victory here is with the irrational creatures; this is possessed also by robbers and murderers, and violators of the tombs. But are you proud of your understanding? It is no proof of understanding to be proud. By this then first you deprive yourself of becoming intelligent. Let us bring down our high thoughts. Let us be moderate, and lowly, and gentle. For such even Christ has pronounced blessed above all, saying, “Blessed are the poor in spirit.” And again, He cried, saying, “Learn of Me, for I am meek and lowly in heart.” For this reason He washed the feet of His disciples, affording us an example of humility. From all these things let us gain profit, that we may be able to obtain the blessings promised to those who love Him, by the grace and lovingkindness, etc.
Source: Homilies on Second Thessalonians (New Advent)