Goclenius Rudolphus, in Germany, Rudolf Göckel (1547–1628), German philosopher. After holding some minor posts elsewhere, Goclenius became professor at the University of Marburg in 1581, where he remained until his death, teaching physics, logic, mathematics, and ethics. Though he was well read and knowledgeable of later trends in these disciplines, his basic sympathies were Aristotelian. Goclenius was very well regarded by his contemporaries, who called him the Plato of Marburg, the Christian Aristotle, and the Light of Europe, among other things. He published an unusually large number of books, including the Psychologia, hoc est de hominis perfection. . . (1590), the Conciliator philosophicus (1609), the Controversiae logicae et philosophicae (1609), and numerous other works on logic, rhetoric, physics, metaphysics, and the Latin language. But his most lasting work was his Lexicon Philosophicum (1613), together with its companion, the Lexicon Philosophicum Graecum (1615). These lexicons provide clear definitions of the philosophical terminology of late Scholastic philosophy, and are still useful as reference works for sixteenth- and early seventeenth-century thought. D.Garb.