Sherwin Klein develops and defends an endoxic, eliminative method for justifying fundamental principles in ethics. Regulative
endoxa (premises that are universally or widely accepted on reflection) are the method’s evaluative criteria. Klein shows that they are the necessary condition for the possibility of ethical knowledge; he also provides criteria for determining their adequacy and distinguishes them from conventional moral opinions. He discusses, in detail, the use of this method by Plato, Aristotle, Hume, and Kant; Mill’s use of
endoxa is also discussed. The method is defended against challenges by MacIntyre, Nietzsche, and Kierkegaard.