The Esoteric Doctrine is a book written by A. P. Sinnett, which delves into the teachings of the esoteric philosophy. The book explores the origins of the universe, the nature of consciousness, and the purpose of human existence. Sinnett draws on the teachings of the Theosophical Society, a group that believed in the existence of hidden knowledge that could only be accessed by those who were spiritually advanced.The book is divided into three parts...