This text examines Jan Patočka's conception of the subject, which resists capture by traditional categories, particularly the category of substance. The author explores whether the subject itself is a category or if it necessitates a completely different conceptual framework. A central problem is the irreducibility of the subject to mere objective being. The subject is defined as a "place of non-adequation" where the non-objectifiable meets the objective, thereby enabling the process of objectification. The text critiques the view of the subject as a mere logical construction, emphasizing instead its active role in objectifying the non-objective. Special attention is paid to the relationship between the subject and truth, viewed in its essential non-adequation. The subject thus becomes the space in which truth, as pure non-objectivity, asserts itself and through which objective conditions are corrected or transformed. The analysis is based on Patočka's reflections on the care of the soul and develops the ontological implications of the subject's non-objectifiability within the context of modern philosophy.