The mind itself, its love [of itself] and its knowledge [of itself] are a kind of trinity. - Augustine of Hippo

Theft is punished by Your law, O Lord, and by the law written in men's hearts, which iniquity itself cannot blot out. For what thief will suffer a thief? Even a rich thief will not suffer him who is driven to it by want. Yet had I a desire to commit robbery, and did so, compelled neither by hunger, nor poverty through a distaste for well-doing, and a lustiness of iniquity. For I pilfered that of which I had already sufficient, and much better. Nor did I desire to enjoy what I pilfered, but the theft and sin itself. There was a pear-tree close to our vineyard, heavily laden with fruit, which was tempting neither for its colour nor its flavour. To shake and rob this some of us wanton young fellows went, late one night (having, according to our disgraceful habit, prolonged our games in the streets until then), and carried away great loads, not to eat ourselves, but to fling to the very swine, having only eaten some of them; and to do this pleased us all the more because it was not permitted.Behold my heart, O my God; behold my heart, which You had pity upon when in the bottomless pit. Behold, now, let my heart tell You what it was seeking there, that I should be gratuitously wanton, having no inducement to evil but the evil itself. It was foul, and I loved it. I loved to perish. I loved my own error — not that for which I erred, but the error itself. Base soul, falling from Your firmament to utter destruction — not seeking anything through the shame but the shame itself!

The philosophers who wished us to have the gods for our friends rank the friendship of the holy angels in the fourth circle of society, advancing now from the three circles of society on earth to the universe, and embracing heaven itself. And in this friendship we have indeed no fear that the angels will grieve us by their death or deterioration. But as we cannot mingle with them as familiarly as with men (which itself is one of the grievances of this life), and as Satan, as we read, sometimes transforms himself into an angel of light, to tempt those whom it is necessary to discipline, or just to deceive, there is great need of God’s mercy to preserve us from making friends of demons in disguise, while we fancy we have good angels for our friends; for the astuteness and deceitfulness of these wicked spirits is equalled by their hurtfulness.

"For I am holy." When I hear these words I recognize the voice of the Saviour. But shall I take away my own? Certainly when He speaks thus He speaks in inseparable union with His body. But can I say, "I am holy"? If I mean a holiness that I have not received, I should be proud and a liar; but if I mean a holiness that I have received - as it is written: "Be ye holy because I the Lord your God am holy" (Lev. 19:2) - then let the body of Christ say these words. And let this one man, who cries from the ends of the earth, say with his Head and united with his Head: "I am holy." … That is not foolish pride, but an expression of gratitude. If you were to say that you are holy of yourselves, that would be pride; but if, as one of Christ's faithful and as a member of Christ, you say that you are not holy, you are ungrateful. …