OF ST. AURELIUS AUGUSTINE

...because they deceive themselves, while they seem to themselves to be something, though they are nothing. Finally, overshadowing themselves with this swelling of pride—against whose foot that holy singer prays may not come upon him,
Psalm 15 Likely a reference to Psalm 36:11 in modern numbering: "Let not the foot of pride come against me."

who said: "In your light we shall see light" original: In lumine tuo uidebimus lumen—they turned away from the light of unchangeable truth itself, and their foolish heart was darkened. For theirs was not a wise heart, even though they had known God, but rather a foolish one, because they did not glorify him as God, nor did they give thanks.
Job 28

For he said to man: "Behold, piety is wisdom." original: pietas est sapientia; Augustine often equates true wisdom with the worship of God. And through this, by claiming to be wise—which is to be understood in no other way than that they attributed this very thing to themselves—they became fools. Now, what need is there to speak of what follows? For through this impiety those men—those men, I say, who were able to know the Creator through the creation original: per creaturam; referring to the physical world as a means of knowing God.—to what depths they fell, since God resists the proud, and where they were plunged, the consequences described in that same epistle teach better than they are recounted here by us.
James 4

For we have not undertaken to explain this epistle Referencing the Epistle to the Romans. in this work, but we strive to demonstrate, as much as we can, especially by its testimony: that we are not divinely aided in working righteousness iustitia: the state of being right or "justified" before God merely because God gave a Law full of good and holy precepts, but because our very will, without which we cannot work good, is aided and raised up by the imparted spirit of grace. Without this help, that teaching is the "letter that kills,"
2 Corinthians 3

because it holds the person guilty of transgression rather than justifying the ungodly. For just as for those who knew the Creator through the creation, that same knowledge profited them nothing for salvation, because knowing God, they did not glorify him as God, nor did they give thanks, claiming to be wise; so also those who know through the law of God how a person ought to live, that knowledge itself does not justify them;
Romans 10

for, wishing to establish their own righteousness, they have not submitted to the righteousness of God.