“Like a Magician Who Tricks the Eyes”: Demonism, Epistemological Uncertainty, and Religious Heterodoxy in Seventeenth-Century Ukraine

This paper situates early modern Ukrainian demonological discourse within the framework of the major religious, cultural, and political disruption that affected Ukraine between 1596 and 1686. I will argue that the confessional struggles that followed the Union of Brest, the period of civil war known as "The Ruin," and the eschatological expectations of the year 1666 contributed to a perception of increased diabolic activity but also to the problem of recognizing the possible discrepancies between reality and non-reality. How could one distinguish true visions from illusory phenomena, if the devil could enter the mind through "bad thoughts" and threaten the stability of one's cognitive experience? Furthermore, if there was more than one church, how could one distinguish between true and false doctrine? These questions, in turn, prompted early modern Ukrainian Orthodox intellectuals to question the role and reliability of sensory perception and human cognition, with issues of epistemology and deception becoming increasingly entangled with confessional polemics and religious dispute.