I Modi (The Ways), also known as The Sixteen Pleasures or under the Latin title De omnibus Veneris Schematibus, is a famous erotic book of the Italian Renaissance in which a series of sexual positions were explicitly depicted in engravings. While the original edition was apparently completely destroyed by the Catholic Church, fragments of a later edition survived. The second edition was accompanied by sonnets written by Pietro Aretino, which described the sexual acts depicted. The original illustrations were probably copied by Agostino Carracci, whose version survives.