(Title in Polish - 'Prawda nie moze sie ostac, jesli jest ona jedynie tworem podmiotu poznawczego'. Uwagi na temat problemu wiedzy i wiary w filozofii Kanta). The subject of the article is the problem of knowledge and faith in the philosophy of Immanuel Kant, and its aim is to discuss the polemics against the views of this philosopher from a realistic position. Firstly, the author believes that the whole philosophy of Kant is of a subjective character and this subjectivism manifests itself in both the sphere of knowledge and the sphere of faith. According to the author, this fact means a serious threat to the idea of truth. Secondly, the author is of the opinion that the philosophy of Kant cannot solve the problem of the fusion of knowledge and faith into a single harmonic totality. It is above all the abstract rationalism of Kant that is exceedingly doubtful and that is expressed in the absence of connections between ethics and religion on one hand and the visible world on the other. The problem of subjectivism and the problem of knowledge and faith suggest taking a look at a wider ideological-historical context. Hence the theology - both the protestant and the Catholic - was considered in the article, and the author takes the line that the philosophy of Kant is more that of a child of German Protestantism and Martin Luther's theology than that of a child of the Catholic theology.