The Roman Catholic archbishop of Philadelphia penned an op-ed earlier this week arguing that legislative measures will not solve the underlying problems that lead to mass violence.

Charles J. Chaput, who was the archbishop of Denver during the 1998 Columbine massacre, opened his article by reiterating what he said in testimony before the U.S. Senate in the wake of that shooting. “The real problem [of Columbine-like violence in our culture] is in here, in us,” he asserted, going on to explain how American culture has increasingly glorified violence and selfishness.