Viacheslav V. Lytvynenko, Ph.D. (2014), Charles University, Prague, Czech Republic, is a research professor of Greek patristics and Slavic medieval tradition. His works include critical Slavonic editions of Athanasius of Alexandria’s Orations against the Arians (Brepols, 2019 and 2021).Mikhail V. Shpakovskiy, M.Phil. (2019), is a junior researcher at the Institute of Philosophy of the Russian Academy of Science. His research areas include Byzantine philosophy, analytic philosophy of religion, metaphysics, and the reception of patristic philosophy in Old Rus'.