In this ambitious study of the development of Charles Peirce 's realism, Mateusz Oleksy attempts "to show that over the course of his entire career Peirce significantly modified his position on realism ". Oleksy differentiates between Peirce 's earlier scholastic realism and Peirce 's mature realism, which Oleksy calls pragmatic realism. "One of the main theses of this book," he proclaims in the introduction, "is that PR is incompatible with SR as a whole, and that it replaces the latter in (...) Peirce 's mature thought". Oleksy proposes to defend this thesis in the four ensuing chapters, "knowing very well that Peirce would most likely protest, since all throughout his career he declared loyalty to SR". (shrink)