Henry More (1614-87) was the greatest English metaphysical theologian and the most perplexing; he was also perhaps the most distinguished member of the group of divines known as the Cambridge Platonists. An admirer of Galileo, Descartes and Boyle, he rejected their detailed applications of mechanical philosophy to the explanation of natural phenomena. He was an experimenter, yet also a cabalist, and one of the few writers whom Newton acknowledged...