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Witelo (born c. 1230) was a Silesian theologian and scientist. He studied at the university in Padua around 1260 and then went to Viterbo. He became friends with William of Moerbeke, the translator of Aristotle. Witelo's major surviving work on optics, called Perspectiva was dedicated to William of Moerbeke. In Perspectiva, Witelo refers to other works that he had written. Most of these have not survived, but "De Natura Daemonum" and "De Primaria Causa Paenitentiae" have been recovered.

Perspectiva was largely based on the work of the Arabic scholar Alhazen and was powerfully influential on later scientists, and in particular on Johannes Kepler. However, it also has much material on psychology, where it outlines doctrines that are close to our own notions of the association of ideas and the subconscious. It also has PlatonicPlatonic idealism is the theory that the substantive reality around us is only a reflection of a higher truth. That truth, Plato argues, is the abstraction. A particular tree, with a branch or two missing, possibly alive, possibly dead, and initials of tw metaphysicalMetaphysics is a branch of philosophy, and related to the natural sciences, like physics, psychology and the biology of the brain; and also to mysticism, religion, and other spiritual subjects. It is notoriously difficult to define, but for purposes of br discussions. He argues that there are intellectual and corporeal bodies, connected by causality (corresponding to the IdealistIn philosophy, Idealism is any theory positing the primacy of spirit, mind, or language over matter. It includes claiming that thought has some crucial role in making the world the way it is--that thought and the world are made for one another, or that th doctrine of the universal and the actual) emanating from GodThis article focuses on the concept of singular, monotheistic God . See deity, gods, or goddesses for details on divine entities in specific religions and mythologies. God is a term referring to the supreme being generally believed to be ruler or creator in the form of Divine Light. Light itself is, for Witelo, the first of all sensible entities, and his views on light are similar to those held by Roger BaconFor the Nova Scotia premier see Roger Bacon (politician) Oxford University Museum Roger Bacon ( 1214- 1294), also known as Doctor Mirabilis ( Latin: "astounding doctor"), was an English philosopher who placed considerable emphasis on empiricism, and has b.

Polish theologians

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