When was Kantian philosophy developed?
Immanuel Kant
In one of Kant's major works, the "Critique of Pure Reason" (1781), he attempted to explain the relationship between reason and human experience and to move beyond the failures of traditional philosophy and metaphysics. Kant wanted to put an end to an era of futile and speculative theories of human experience, while resisting the skepticism of thinkers such as David Hume. Kant regarded himself as showing the way past the impasse between rationalists and empiricists which philosophy had led to, and is widely held to have synthesized both traditions in his thought.
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.