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"".
Allen W. Wood
Wood has written prolifically on many subjects in moral and social philosophy, and publications he has authored include: "Kant's Moral Religion" (1970), "Kant's Rational Theology" (1978), "Karl Marx" (1981), "Hegel's Ethical Thought" (1990), "Kant's Ethical Thought" (1999), "Unsettling Obligations" (2002), "Kant" (2004), "Kantian Ethics" (2007) and "The Free Development of Each: Studies in Freedom, Right and Ethics in Classical German Philosophy". He is also working on a book continuing his 'Ethical Thought' series entitled "Fichte's Ethical Thought", fulfilling his earlier suggestion that "having written a book on "Hegel's Ethical Thought" and a book on "Kant's Ethical Thought", I should... write a book... on "Fichte's Ethical Thought".