Varlamova M.N. What is matter, is it δύναμις or φάντασμα? The concept of matter in the philosophy of Michael Psellos and John Italos. SCHOLE. Ancient Philosophy and the Classical Tradition. 2024. Vol. 18. No. 1. Pp. 148-165. Varlamova M.N. What is matter, is it δύναμις or φάντασμα? The concept of matter in the philosophy of Michael Psellos and John Italos. SCHOLE. Ancient Philosophy and the Classical Tradition. 2024. Vol. 18. No. 1. Pp. 148-165. ISSN 1995-4328 (печ. версия); 1995-4336 (эл. версия) DOI 10.25205/1995-4328-2024-18-1-148-165РИНЦ: https://elibrary.ru/contents.asp?id=69026941Posted on site: 25.10.24Текст статьи на сайте журнала URL: https://classics.nsu.ru/schole/assets/files/18-1-varlamova.pdf (дата обращения 25.10.2024)AbstractIn this article, I discuss the concept of matter - both the first matter and the physical matter of the world, that is, elements - in Byzantine philosophy of the 11th century, namely, in the works of Michael Psellos and John Italos. In particular, I am interested in how the concept of matter is interpreted in connection with the idea of Creation and the finiteness of the world. I trace the connection between the philosophy of the 11th century and the late ancient discussions about matter. I focus on Philoponus' arguments against the eternity of the world and his definition of matter as a three-dimensional extension as well as on the Simplicius' analysis of matter as a principle of corporality. However, it is important for me to show not only the dependence of the Byzantine philosophers on Philoponus and Simplicius, but also their autonomy in defining philosophical terms. The intellectual horizon of Michael Psellos' and John Italos' thought, which influences the approach of these philosophers to the discussion of physical concepts, differs from the horizon of late ancient philosophy.