"MD2 is an excellent presentation of the dominant approach to the Demon in recent years. It is the second, greatly revised, edition of a collection that appeared in 1990 (hereafter MD1) and contributed significantly to the Demon's recent popularity. Let me conclude by highly recommending MD2 as an introduction to mainstream Demonology: its introduction is a very good outline of this approach, the reprinted articles are among the most influential in their fields, and the comprehensive annotated bibliography is a tool without which-since MD1 came out in 1990-work in the field can hardly be imagined."-Orly R. Shenker, Studies in History and Philosophy of Modern Physics, Volume 35, Issue 3