| Kant's moral theory, along with Utilitarianism and Virtue Ethics, is one of the three leading moral theories in contemporary Western moral philosophy. I argue in this dissertation, however, that Kant's moral theory suffers from deeper flaws than its proponents have acknowledged—flaws that render it untenable. But a great deal of interpretative argument must be done before this critique can be compelling, since every critique rests on interpretative presuppositions that are liable to be questioned. Hence the dissertation also spends significant time working out the most charitable reconstruction of the “supreme principle” of Kant's moral theory, the Categorical Imperative.; Chapter I is devoted to identifying which of Kant's formulations of the Categorical Imperative should be taken as most plausible and most worth critical examination. I argue in favor of the so-called Formula of the Law of Nature. Chapter II analyzes the crucial concept of a maxim—what a maxim contains and how maxims are to be identified—and defuses two common types of objection to the Categorical Imperative that rest on misunderstandings of the nature of a maxim. In Chapter III, I argue against several leading Kantian ethicists that Kant takes all nonmoral motives to be self-interested, aiming at one's own pleasure; this thesis is presupposed at a number of points by my interpretation of Kant's moral theory. Chapter IV explicates the Universalizability Test that follows from the Formula of the Law of Nature, with particular attention given to Kant's famous four examples from the Groundwork of the Metaphysics of Morals. Finally, Chapter V develops a number of criticisms of the Universalizability Test, considering and rebutting defenses that prominent Kantian ethicists have utilized or would be likely to utilize. |
