A fool despiseth his father's instruction (Proverbs 10:1): but he that regardeth reproof is prudent (Proverbs 19:25). The son who attends to his father's reproof dealeth prudently, or becomes wiser. Astutior fiet, Vulgate; πανουργότερος, Septuagint.
The Vulgate has here a distich which is not in the Hebrew, but a similar paragraph is found in the Septuagint. Thus Vulgate, "In the abundance of righteousness virtue is greatest; but the imaginations of the wicked shall be rooted up;" Septuagint, "In the abundance of righteousness is much strength; but the impious shall be destroyed from the very root."
The addition seems to have been an explanation of the following verse, which has been foisted into the text here.