On June 3rd-6th in Leuven, Belgium, the 23rd annual symposium of the International Society for Neoplatonic Studies (ISNS) took place. The programme of the whole event can be downloaded here. AΦR was certainly present there.
Together with two other panelists, Tomasz Mróz presented his paper in the panel: Medieval Platonism. These panelists were Heide König (LMU Munich) and Ernesto Fuentes Padgett (Notre Dame). Mróz’s paper was titled Vitello’s Theory of Daemons. Platonic Inspirations in a Naturalistic Treatment.
Vitello was a philosopher and a natural scientist of the second half of the 13th century, best known for his treatise in optics. To obtain degrees he travelled to the universities in Paris and Padua, but he also visited Viterbo. Although he gained recognition as the author of Perspectiva, dedicated to Wilhelm of Moerbecke, his interests went beyond optical issues and in a letter titled De causa primaria paenitentiae in hominibus et de natura daemonum he differentiated between the real demons as animals and apparent demons, as the effects of optical illusions or malfunctions of human cognition. He developed a theory of demons, their nature, their position among natural creatures, and investigated a number of detailed issues connected to the life of demons and their various interactions with human beings.
Mróz took an attempt to demonstrate how Vitello started with Plato, Calcidius’ commentary to the Timaeus, mathematical considerations and the Averroists’ theory of double truth to prove the existence of demons as animals and how, subsequently, he took advantage of his experience as a natural scientist and a confessor to supplement the theory with a number of observations and the then common opinions that eventually, in his eyes, reinforced the theory.
The conference in Leuven was, as all ISNS events, a successful meeting, gathering specialist in history of philosophy from antiquity to modern times. It was also an opportunity to see and listen to papers of scholars from all the continents. It was also a pleasure to see there our collaborator from Vilnius University, Jonas Čiurlionis, who delivered a paper Mathematics of Music in Timaeus’ creation of the World Soul.
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