When William Blake was just four years old, he saw God appear in a window. A few years later, he came across a tree teeming with angels on Peckham Rye. Visions such as these were an everyday occurrence for Blake, a man whose work blurred the barrier between lived reality and the spiritual plane. Largely overlooked during his lifetime and even dismissed as insane, Blake has latterly come to be seen as one of the foremost figures of the Romantic Age. It's
