Neo-Kantianism
In late modern Continental philosophy, Neo-Kantianism () was a revival of the 18th-century philosophy of Immanuel Kant. More specifically, it was influenced by Arthur Schopenhauer's critique of the Kantian philosophy in his work "The World as Will and Representation" (1818), as well as by other post-Kantian philosophers such as Jakob Friedrich Fries and Johann Friedrich Herbart.
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.