"In this book Waddell has managed to convey the dilemmas facing seventeenth-century religious trying to reconcile emerging science — the legacy of Aristotle — with the mysteries of nature. He is to be commended on the clarity of his language in presenting the development of thought where there was much obfuscation."- John N. Crossley, Monash University"Through a series of case studies on ontology, demonology, magnetism and the occult, Mark A. Waddell presents a clear and orderd discourse on hidden causes." - Hannah Murphy, Oriel College, Oxford