Abstract
It is shown that the program of naturalizing of epistemology, that is, the program of the whole substitution of epistemology for sciences or for the humanities is not realizable. Naturalized epistemology includes metaphysical (in Kant’s sense: synthetic, speculative, a priori) claims which save its partly autonomous philosophical status. The result presented in the paper does not exclude the naturalizing program. It leads, instead, to a modified, attenuated version of it—such one which permits to open epistemology by transferring it in multi-facet vivid philosophical investigations juxtaposed with science and the humanities. The postulated attenuated version of naturalizing does not result in destroying epistemology as a special philosophical domain of investigations, not substitutable for sciences