Thomas Troward 
Edinburgh Lectures on Mental Science [PDF ebook] 

Today, science and the supernatural are often pitted against one another as diametric opposites. However, in earlier eras, they were often seen as different sides of the same coin, as it were. In this fascinating series of lectures, Thomas Troward calls on science, philosophy, and spiritual principles to provide an explanation for magic and other supernatural events. In light of the growing popularity of quantum explanations for supernatural phenomena, this 1904 work remains surprisingly prescient.