There is this difference between him who loves the truth and him who hates it. He who hates the truth, lies in the darkness of mortal sin. He hates what God loves, and loves what God hates. God hates sin, and the inordinate joys and luxuries of the world, and such a man loves it all, fattening himself on the world's wretched trifles, and corrupting himself in every rank. If he has an office in which he ought to minister in some way to his neighbour, he serves him only so far as he can get some good for himself out of it, and no farther, and becomes a lover of himself. Christ the Blessed gave His life for us, and such a man will not give one word to serve his neighbour unless he sees it paid, and overpaid. If the neighbour happens to be a poor man who cannot pay, he makes him wait before telling him the truth, and often does not tell it to him at all, but makes fun of him; and where he ought to be pitiful and a father of the poor, he becomes cruel to his own soul because he wrongs the poor. But the wretched man does not see that the Highest Judge will return to him
nothing else than what he receives from him, since every sin is justly punished and every good rewarded. Christ embraced voluntary poverty and was a lover of continence; the wretched man who has made himself a follower and lover of falsehood does just the contrary; not only does he fail to be content with what he has, or to refrain through love of virtue, but he robs other people. Nor does he remain content in the state of marriage, in which, if it is observed as it should be, a man can stay with a good conscience; but he plunges into every wretchedness, like a brute beast, without moderation, and as the pig rolls in filth, so does he in the filth of impurity.
--Saint Catherine Benincasa of Siena, Letter to Lorenzo del Pino of Bologna (Catherine's letters are online at Project Gutenberg)
