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How to Scare International Students with Vitello’s Theory of Demons
In March (23rd-27th) 2026, an Erasmus+ Blended Intensive Programme meeting was held at the University of Zielona Góra. About fifty students representing partner universities from Bulgaria, Croatia, Czechia, Lithuania, Portugal, Romania, Turkey and Vietnam took part in this event. Ancient Φilosophy Reception research group was present there and it was Tomasz Mróz whose presentation inaugurated on-site and offline part of the whole event.
The general topic of this BIP meeting was: Interference Patterns – Science and Culture in Dialogue. Mróz’s lecture – The Philosopher Vitello of Legnica and His Scholarly Theory of Demons – aimed to demonstrate how this 13th century scientist and philosopher, man of the world and a locally engaged scholar, used ancient thinkers (Calcidius and Aristotle) and combined mathematical calculations, natural sciences, philosophy and his own life experience to develop a theory of demons as animals composed mainly of air, the subtle element. He rejected theological concept of demons as a fallen angels and took an attempt to explain various “demonic” phaenomena secundum viam naturalem et possibilem.
The questions from the audience concerned the problem of Vitello’s method as he departed from theological discourse. The discussion that followed emphasised the convergence of methods of Latin Averroists and Vitello, whose intention may have also been the defence of the autonomous character of philosophy and sciences. Feedback from students was also invaluable as they were surprised that such intriguing topics can be found in (otherwise dull?) history of medieval philosophy. Thank you Moldovan students in Romania!
As a digression in the course of the lecture, Woody Allen’s Everything You Always Wanted to Know About Sex* (*But Were Afraid to Ask appeared. However, since the episode with Daisy, the sheep, is definitely not suitable for all audiences, it will not be developed here 😉
Of course, no one would probably argue today for topicality of Vitello’s theory of demons, but at least some of his considerations should be taken as a serious piece of advice even in the 21st century: if you see demons or angels or hear them talking to you or making sounds, you should immediately consult a doctor!
Thanks to Sylwia Kondej and Magdalena Pokrzyńska
for organising such a great event!
Vitello’s Anthropology and Its Aristotelian Roots
On May 28th-29th 2024 a conference titled Polish Philosophical Anthropology took place in Częstochowa. This event was organised by the Department of Philosophy, Jan Dlugosz University. It was another conference held in Częstochowa that aimed at shedding some new light on selected aspects of the history of philosophy in Poland.
AΦR member, Tomasz Mróz, has participated in this conference with a paper devoted to the philosopher with whom all the histories of philosophy in Poland usually begin. It was Vitello, a 13th century scholar, who is well-known from his theory of demons as animals built from the four elements with air as a dominant factor. Vitello argued that the demons were superior physically and intellectually to all the other animals, including human beings. Human beings, consequently, could only be considered as an intermediary species between apes and demons. In this way Vitello, with the aid of Aristotle, demonstrated that human being can’t be regarded as a crowning creature in the terrestrial world. Let us add on the margin that Vitello took advantage of his expertise in philosophy, natural sciences, medicine and life’s experience to depict vividly various interactions between humans and demons, not all of which can be presented to the minors 😉
(Another) Erasmus Teaching Visit in Vilnius
In April, 15th-19th, 2024, Tomasz Mróz enjoyed his fourth Erasmus teaching visit in Faculty of Philosophy, Vilnius University.
This year, some issues connected to the reception of ancient philosophy were addressed during the lecture on Władysław Tatarkiewicz (1886-1980) and his History of Philosophy. It was ancient philosophy as a subject of various problems in historiography of philosophy.
More important, however, was a talk devoted to Vitello (ca. 1230-1300) and his theoretical reflection on the nature of the daemons. Vitello’s demonology stemmed from his research in natural sciences and it employed neo-Platonic and Aristotelian elements, such as a belief in a mathematical structure of the universe, the theory of four elements and natural creatures. Vitello’s philosophical investigations were presented against the background of the 13th century developments in philosophy, especially the Averroist controversy.
Teaching duties were supplemented with meetings with the Faculty members and discussions with students extra universitatis muros. Hopefully, this was not the final chord in the co-operation between Vilnius University and the University of Zielona Góra.
Erasmus Teaching Visit in Vilnius University
In April, 18th-22nd, 2023, Tomasz Mróz enjoyed his third Erasmus teaching visit in Faculty of Philosophy, Vilnius University.
Vilnius University is a unique research and teaching institution in Central-Eastern Europe. It has a long and sometimes turbulent Polish-Lithuanian history. Some of the lectures delivered by T. Mróz to philosophy students in Vilnius concerned a part of this history and, naturally, reception of ancient philosophy.
One of the lectures discussing the issues of ancient philosophy reception had Wincenty Lutosławski (1863-1954) as its topic. The focus was on his Vilnius period and his vision of a philosophical development of Plato from idealism to spiritualism. Since Lutosławski considered Polish Romantic Messianism to be founded on spiritualism, consequently he could consider this unique tradition to be rooted in Plato, who was presented by Lutosławski as an ancient philosophical predecessor of Polish 19th century literary and philosophical tendency.
Another lecture in which ancient philosophy reception appeared was devoted to Vitello (ca. 1230-1300?) and his theoretical reflection on the nature of the daemons. Vitello’s demonology stemmed from his research in natural sciences and it employed neo-Platonic and Aristotelian elements, such as a belief in a mathematical structure of the universe and the theory of four elements. Vitello’s philosophical investigations were presented against the background of the 13th century developments in philosophy.
Teaching duties were supplemented with meetings with the Faculty members and discussions on the plans of a future co-operation activities between philosophers of Vilnius University and University of Zielona Góra.
History of Philosophy in Poland in Martin-Luther-Universität Halle
Selected Topics in the History of Philosophy in Poland was the title of the course, which was delivered in May and June 2022 by Tomasz Mróz for the students of Martin-Luther-Universität (MLU) Halle in the building of the Steintor Campus (on the left). T. Mróz was appointed at MLU as Gastprofessor (funded by Deutscher Akademischer Austauschdienst DAAD) for a month at the Aleksander-Brückner-Zentrum für Polenstudien (Institut für Geschichte).
The course had a form of “Blockseminar” meetings and consisted of lectures, seminars and students’ presentations, focusing on various ideas, currents and problems in the history of philosophy in Poland. A course like this could not, obviously, do without a closer insight into some issues of ancient philosophy reception. For example, reception of Aristotle’s philosophy of nature in Vitello’s theory of demons and Pythagorean and Platonic inspirations in Copernicus were discussed. During one of the final lectures the problems of Plato reception in Poland were presented, as they were previosuly structured in the book Plato in Poland 1800-1950. The works of the following authors were briefly examined: A.I. Zabellewicz, F.A. Kozłowski, W. Tatarkiewicz, P. Semenenko, B. Limanowski, W. Dzieduszycki, E. Jarra, S. Pawlicki, W. Lutosławski, S. Lisiecki and W. Witwicki.
All the students attending the course in Polish philosophy should be thanked for their dilligence, co-operation and their presentations. The lectures, however, wouldn’t have taken place without the granting decision of professor Yvonne Kleinmann, who holds a chair in the East-European history at MLU and is the head of the Aleksander-Brückner-Zentrum für Polenstudien, and without co-ordinating work of doctor Paulina Gulińska-Jurgiel, to both of whom the lecturer is extremely grateful.
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