" Anderson] succeeds in neatly fitting together selected pieces of the history of discernment of spirits to provide a valuable, readable description of the contours of its evolution in the late Middle Ages." -- Debra L. Stoudt, Virginia Polytechnic Institute and State University, The Medieval Review Late medieval Christians lived in a world of visions, but they knew that not all visions came from God: angels, demons, illness, nature, or passion could also inspire an apparent divine visitation. During the thirteenth and fourteenth centuries, the involvement of visionaries in everything from...