In this groundbreaking work, philosopher G. E. Moore sets out to provide a new foundation for ethical thought. Arguing that previous attempts to define ethics in terms of natural or supernatural principles were flawed, Moore proposes that ethical claims are instead based on direct sensory experience. With clear and compelling arguments, Moore transforms the study of ethics into a rigorous and empirical science. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.