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"".
Marcia Baron
Baron has written or co-written two books and is working on a third - "Three Methods of Ethics: A Debate" in 1997, and "Kantian Ethics Almost without Apology" in 1995. Baron's upcoming book, tentatively titled "Self-Defense, Reason, and the Law", focuses on the reasonable belief requirement as it pertains to self-defense. She has also published around four dozen papers, one monograph, five encyclopedia articles, and a host of book reviews. In "Three Methods of Ethics", Baron's contribution focused providing a limited defense of Immanuel Kant, attempting to demonstrate that a Kantian position is superior to that espoused by virtue ethicists. In "Kantian Ethics", Baron attempts to provide a limited defense of Kantian ethics intended for a broader audience than those who are already Kantians. "Kantian Ethics" tries to directly address two widely perceived problems in Kant's positions; first, the idea that Kant's ethics leave no room for superogatory actions, and second, that Kant places too much emphasis on the idea of duty.