The Marriage of Heaven & Hell" was created early in Blake's series of illuminated books each of which was presented by him as an attractive work of art made entirely by his own h&. Written principally in prose " The Marriage" represents Blake's first full-scale attempt to present his philosophic message. In it he expresses his extreme humanist views through a system in which Angels & Devils change places Good becomes Evil Heaven is Hell. The 27 colour plates are the work of Blake himself with commentary & introduction by Sir Geoffrey Keynes."