Fernando de Rojas' 'Celestina' is considered to be one of the greatest works of Spanish literature, and traditionally marks the end of medieval literature and the beginning of the literary renaissance in Spainches The story tells of a bachelor Calisto who uses the old procuress Celestina to start an affair with Melibea, an unmarried girl kept in seclusion by her parents. Though the two use the rhetoric of courtly love, sex - not marriage - is their aim.