The paper investigates the epistemology of J. G. Schwarz. There are three types of knowledge available to man, which are «the curious», «the pleasant» and «the useful». In common they could be respectively designated as rational, sense-aesthetic and moral-mystical. Inside the core of the theory there are three kinds of systematic presuppositions. The first is the intermediate status of a human being. The second is the ternary nature of a person. The third is the historical conditioning of the humankind knowledge experience. Despite of triviality of the presuppositions, Schwarz succeeded in performance of their original synthesis, which had anticipated some of the following routes of the European thought. Mainly it was gained due to the organic involvement of elements of projective, actional and utilitarian approaches, which were caused by Schwarz’s very specific personal situation of the philosophizing.