Visions are a recurring idea in the story. Many of the medieval mystics were subject to visions. The entire revelations of Julian of Norwich, for example, were based on a series of visions of divine love. Catherine of Genoa also experienced visions frequently, as recorded in the Spiritual Dialogue. She saw angels and laughed with them; she saw Christ crucified, with his body covered from head to foot with blood; she had visions of love, of joy, and of sin. Ill and dying, she had a vision of a ladder of flame (representing divine love) that drew her upwards, to her great joy. That vision lasted for four hours.