“McGinn’s The Varieties of Vernacular Mysticism is an astonishing achievement. No one will approach religious and mystical teaching in the late middle ages (1300-1550) quite the same way again. The broadest and richest account of Dutch mystical writers, a vision of Italian mystical writing that puts Catherine of Siena alongside Marsilio Ficino and Christian kabbalists, a fresh approach to famed English writers (Rolle, Julian, the Cloud author) fitting them into a larger religious world—all this in one volume, with serious attention to thought and theology, a close reading of texts, generous citation of vernacular originals, and weighty bibliographies. It is hard to imagine one person even attempting it, but McGinn has done it.”