Because, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish hearts were darkened.
All Commentaries on Romans 1:21 Go To Romans 1
Prosper of Aquitaine
AD 455
It is well known how Greek schools and Roman eloquence and the search of the whole world in the quest of the supreme good, with the most penetrating study and outstanding ability, accomplished nothing by their labor except to become “futile in their thinking, and their senseless minds were darkened.”