 This was evident in his next plays, which were classical tragedies, "Horace" (1640, dedicated to Richelieu), "Cinna" (1643), and "Polyeucte" (1643).These three plays and "Le Cid" are collectively known as Corneille's "Classical Tetralogy".Corneille also responded to the criticisms of the Académie by making multiple revisions to "Le Cid" to make it closer to the conventions of classical tragedy.