Mater et Magistra §215

²¹⁵ Let men make all the technical and economic progress they can, there will be no peace nor justice in the world until they return to a sense of their dignity as creatures and sons of God, who is the first and final cause of all created being. Separated from God a man is but a monster, in himself and toward others; for the right ordering of human society presupposes the right ordering of man's conscience with God, who is Himself the source of all justice, truth and love.