CHT162794 Allegory of Arithmetic, from \'Margarita Philosophica\' by Gregor Reisch, 1503 (woodcut) by Reisch, Gregor (d.1525); Bibliotheque de la Faculte de Medecine, Paris, France; (add.info.: Pythagoras (c.580-500 BC) calculating with counters and Boethius (c.480-524 AD) with numbers; Anicius Manlius Severinus, Roman philosopher and statesman; the Margarita Philosophica was an Encyclopedia of knowledge intended as a text-book for youthful students, containing in twelve books Latin grammar, dialectics, rhetoric, arithmetic, music, geometry, astronomy, physics, natural history, physiology, psychology, and ethics; extremely popular late medieval and Renaissance textbook in schools and universities ; Gregor Reisch (1467-1525) German Carthusian humanist and writer; ); 穢 Archives Charmet; German, out of copyright.