On the Law of Nature is at once a traditional and eclectic treatise of moral philosophy by one of the sixteenth century's most widely read Protestant authors. Niels Hemmingsen (1513-1600), the "Teacher of Denmark," was a Danish humanist and theologian who studied with the "Teacher of Germany," Philip Melanchthon, at the University of Wittenberg. Hemmingsen went on to serve as a professor at the University of Copenhagen--first of Greek, then of...