Immanuel Kant
Kant developed his moral philosophy in three works: "Groundwork of the Metaphysic of Morals" (1785), "Critique of Practical Reason" (1788), and "Metaphysics of Morals" (1797).
Yirmiyahu Yovel
Yovel's first book, based on his PhD dissertation, was "Kant and the Renewal of Metaphysics" (1974, in Hebrew.) While Kant had been often held to have destroyed metaphysics, Yovel's book argues that Kant's actual program was to renew it, by replacing the old dogmatic metaphysics with a new critical one. Metaphysical questions are deeply significant even when they exceed the range of legitimate answers. To either repress the questions or to pretend answering them is equally irrational. Reason in Kant has a metaphysical interest and a critical interest that are equally indispensable, yet contradict each other in the absence of a critique. The critical turn resolves this antinomy in two stages. First, it establishes a system of synthetic a-priori categories and principles that functions as a valid metaphysics of the immanent (empirical) domain; and, secondly, in the Dialectic, it re-orients the metaphysical drive from its search of empty, illusory objects back into the empirical world, and makes us realize our fundamental finitude, as well as the endlessly open horizons within this world which we can explore.