Immanuel Kant
Kant published a second edition of the "Critique of Pure Reason" ("Kritik der reinen Vernunft") in 1787, heavily revising the first parts of the book. Most of his subsequent work focused on other areas of philosophy. He continued to develop his moral philosophy, notably in 1788's "Critique of Practical Reason" (known as the second "Critique") and 1797's "Metaphysics of Morals". The 1790 "Critique of Judgment" (the third "Critique") applied the Kantian system to aesthetics and teleology. It was in this critique where Kant wrote one of his most popular statements, ""it is absurd to hope that another Newton will arise in the future who will make comprehensible to us the production of a blade of grass according to natural laws"".
Wilhelm Wundt
In the introduction to his "Grundzüge der physiologischen Psychologie" in 1874, Wundt described Immanuel Kant and Johann Friedrich Herbart as the philosophers who had the most influence on the formation of his own views. Those who follow up these references will find that Wundt critically analysed both these thinkers’ ideas. He distanced himself from Herbart's science of the soul and, in particular, from his "mechanism of mental representations" and pseudo-mathematical speculations. While Wundt praised Kant's critical work and his rejection of a "rational" psychology deduced from metaphysics, he argued against Kant's epistemology in his publication "Was soll uns Kant nicht sein?" (What Kant should we reject?) 1892 with regard to the forms of perception and presuppositions, as well as Kant's category theory and his position in the dispute on causal and teleological explanations.