Paul,
Letter to the Romans 1:22 (KJV):
Professing themselves to be wise, they became fools...
φάσκοντες εἶναι σοφοὶ ἐμωράνθησαν...
Karl Barth ad loc. (tr. Edwyn Hoskyns):
Vanity of mind
and blindness of heart inevitably bring into being corrupt
conduct. The more the unbroken man marches along his road
secure of himself, the more surely does he make a fool of himself, the more certainly do that morality and that manner of
life which are built up upon a forgetting of the abyss, upon a
forgetting of men's true home, turn out to be a lie.