 Famous vernacular poets of the 15th century include the renaissance epic authors Luigi Pulci ("Morgante"), Matteo Maria Boiardo ("Orlando Innamorato"), and Ludovico Ariosto ("Orlando Furioso").Renaissance scholars such as Niccolò de' Niccoli and Poggio Bracciolini scoured the libraries in search of works by such classical authors as Plato, Cicero and Vitruvius.The works of ancient Greek and Hellenistic writers (such as Plato, Aristotle, Euclid, and Ptolemy) and Muslim scientists were imported into the Christian world, providing new intellectual material for European scholars.