Michelangelo 's art contained hints of what universal elements ?
But the number of such decorative treatments of religious subjects declined sharply , as did " unbecomingly or confusedly arranged " Mannerist pieces , as a number of books , notably by the Flemish theologian Molanus ( " De Picturis et Imaginibus Sacris , pro vero earum usu contra abusus " ( " Treatise on Sacred Images " ) , 1570 ) , Cardinal Federico Borromeo ( " De Pictura Sacra " ) and Cardinal Gabriele Paleotti ( " Discorso " , 1582 ) , and instructions by local bishops , amplified the decrees , often going into minute detail on what was acceptable .