Orlando Furioso (The Frenzy of Orlando, more literally Raging Roland) (in Italian furioso is seldom capitalized) is an Italian epic poem by Ludovico Ariosto which has exerted a wide influence on later culture. The earliest version appeared in 1516, although the poem was not published in its complete form until 1532. Orlando Furioso is a continuation of Matteo Maria Boiardo's unfinished romance Orlando Innamorato ("Orlando in Love", published posthumously in 1495). Orlando is the Christian knight known in English as Roland. The action takes place against the background of the war between Charlemagne's Christian paladins and the Saracen army that is attempting to invade Europe. The poem is about war and love and the romantic ideal of chivalry. It mixes realism and fantasy, humor and tragedy. The stage is the entire world, and it also includes a trip to the moon.