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"".
Patricia Kitcher
In her early work Kitcher wrote a number of papers in philosophy of psychology, philosophy of mind, and philosophy of science. She argued for the viability of intentional psychology and the autonomy of functionalist psychology from neurophysiology. Later work predominantly concentrated on analysis of problems stemming from the interpretation of Kant's first Critique. Kitcher has written numerous articles on the forms of intuition, Kant's epistemology, self-consciousness, and on how transcendental arguments work.
Kitcher has written two books that also pursue psychological themes. "Kant's Transcendental Psychology" was a radical departure from most Kant exegesis. The book makes two main claims about the "Critique of Pure Reason". First, contra Peter Frederick Strawson, Kitcher argues that to understand synthetic a priori knowledge, it is essential to consider transcendental psychology. Second, she explicates a Kantian argument for the necessity of an integrated thinking subject, which serves as a reply to David Hume's denial of the unity of the self.