This book is a collection of philosophical and theological tracts by the Irish philosopher George Berkeley, best known for his contributions to the field of subjective idealism. The tracts cover a range of topics, from metaphysics and epistemology to ethics and the philosophy of religion, and offer a comprehensive overview of Berkeley's philosophical thought. 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.