Often portrayed as enemies or opposites, science and faith were intertwined and often indistinguishable from medieval times through the 18th century, avers Cambridge historian Derek Wilson in this revisionist survey. Even the discoverers of the circulatory system, the laws of gravity, and the movement of the earth around the sun held beliefs that originated in folk religion and the pagan past, and the church itself was permeated with a belief in astrology and other magical traditions. Also published as A Magical World, Wilson's history includes such figures as Voltaire, Martin Luther, Johannes Kepler, Isaac Newton, and René Descartes.