 Baldassare Castiglione's dialogue "The Book of the Courtier" describes the ideal of the perfect court gentleman and of spiritual beauty.The lyric poet Torquato Tasso in "Jerusalem Delivered" wrote a Christian epic, making use of the "ottava rima", with attention to the Aristotelian canons of unity.Giovanni Francesco Straparola and Giambattista Basile, which have written "The Facetious Nights of Straparola" (1550–1555) and the "Pentamerone" (1634) respectively, printed some of the first known versions of fairy tales in Europe.