According to a widespread view, Kant's claim that moral wrongness has its ground in a contradiction underlying every immoral action is a “bluff” rooted in “dogmatic moralism”. Ever since Benjamin Constant's exchange with Kant, counterexamples have played a crucial role in showing why Kant's “universalization procedure” fails to determine the moral validity of our judgments. Despite recent attempts to bring Kant's ethics closer to Aristotle's, these counterexamples have prevailed. Most recently, Jesse Prinz has launched another attack along the same lines. (...) Prinz insists that Kant's universalization procedure fundamentally begs the question and fails to generate plausible results. Even authors who are very sympathetic to Kant, such as Allen Wood, have tried to downplay universalization, focusing instead on other formulations of the categorical imperative. In this paper, I respond directly to four of the most prominent counterexamples. In each case, I aim to show how we can uphold Kant's fundamental claim that the universal law formulation of the categorical imperative articulates the form of our particular moral judgments. (shrink)

According to Agrippa's trilemma, an attempt to justify something leads to either infinite regress, circularity, or dogmatism. This essay examines whether and to what extent the trilemma applies to ethics. There are various responses to the trilemma, such as foundationalism, coherentism, contextualism, infinitism, and German idealism. Examining those responses, the essay shows that the trilemma applies at least to rational justification of contentful moral beliefs. This means that rationalist ethics based on any contentful moral belief are rationally unjustifiable.