1. Definition
A system is both a way of organizing knowledge and knowledge about order (Knowledge, organization of). The tradition of the summa in medieval Scholasticism (e.g. the Summa theologica of Thomas Aquinas and the Summa logicae of William of Ockham) extended into the first centuries of the early modern period in a multitude of attempts to present a unity of thought and of the world systematically. Of cour…