 Johann Christoph Sturm (1635–1703) was an eclectic German philosopher, professor at the University of Altdorf, one of the first experimental physicists, a mathematician, astronomer, calendariographer, and Lutheran priest. He was a correspondent of Robert Boyle (1627–1691) and Gottfried Leibniz (1646–1716), among others. Sturm’s thought mirrors the complex interplay between debates in metaphysics, natural philosophy, and theology that characterize the second half of the seventeenth century.