[I]t will be difficult for a person to find a systematic method for ethics which will just fit his particular set of ethical commitments, which will permit him to believe just the ethical propositions he already accepts. One can find an ethical method which will support some or even many of one's ethical convictions. But whichever systematic method one picks, one will probably find it is incompatible with some of one's ethical beliefs.
(Richard B. Brandt, Ethical Theory: The Problems of Normative and Critical Ethics, Prentice-Hall Philosophy Series, ed. Arthur E. Murphy [Englewood Cliffs, NJ: Prentice-Hall, 1959], 260 [italics in original])
