Kantianism
Kantianism is the philosophy of Immanuel Kant, a German philosopher born in Königsberg, Prussia (now Kaliningrad, Russia). The term "Kantianism" or "Kantian" is sometimes also used to describe contemporary positions in philosophy of mind, epistemology, and ethics.
Józef Kalasanty Szaniawski
Szaniawski especially urged the study of Kant; but, having accepted the fundamental points of the critical theory of knowledge, he still hesitated between Kant's metaphysical agnosticism and the new metaphysics of Idealism. He owed a particular debt to Schelling. Thus this one man introduced to Poland both the anti-metaphysical Kant and the post-Kantian metaphysics.