1. _Sources and Plan_. Few poems more clearly illustrate the variety of influences from which most great literary works result. In many respects the most direct source was the body of Italian romances of chivalry, especially the 'Orlando Furioso' of Ariosto, which was written in the early part of the sixteenth century. These romances, in turn, combine the personages of the medieval French epics of Charlemagne with something of the spirit of Arthurian romance and with a Renaissance atmosphere of magic and of rich fantastic beauty. Spenser borrows and absorbs all these things and moreover he imitates Ariosto closely, often merely translating whole passages from his work. But this use of the Italian romances, further, carries with it a large employment of characters, incidents, and imagery from classical mythology and literature, among other things the elaborated similes of the classical epics. Spenser himself is directly influenced, also, by the medieval romances. Most important of all, all these elements are shaped to the purpose of the poem by Spenser's high moral aim, which in turn springs largely from his Platonic idealism. What the plan of the poem is Spenser explains in a prefatory letter to Sir Walter Ralegh. The whole is a vast epic allegory, aiming, in the first place, to portray the virtues which make up the character of a perfect knight; an ideal embodiment, seen through Renaissance conceptions, of the best in the chivalrous system which in Spenser's time had passed away, but to which some choice spirits still looked back with regretful admiration. As Spenser intended, twelve moral virtues of the individual character, such as Holiness and Temperance, were to be presented, each personified in the hero of one of twelve Books; and the crowning virtue, which Spenser, in Renaissance terms, called Magnificence, and which may be interpreted as Magnanimity, was to figure as Prince (King) Arthur, nominally the central hero of the whole poem, appearing and disappearing at frequent intervals. Spenser states in his prefatory letter that if he shall carry this first projected labor to a successful end he may continue it in still twelve other Books, similarly allegorizing twelve political virtues. The allegorical form, we should hardly need to be reminded, is another heritage from medieval literature, but the effort to shape a perfect character, completely equipped to serve the State, was characteristically of the Platonizing Renaissance. That the reader may never be in danger of forgetting his moral aim, Spenser fills the poem with moral observations, frequently setting them as guides at the beginning of the cantos.