In today's world all the signs indicate that a sea change in human consciousness is taking place. What is the source and motive power of this great change? William Barnes believes the source is a new revelation from God associated with Baha'u'llah, founder of the Bahá'i Faith. This new consciousness is universal in scope, and embraces the material, intellectual, social, and spiritual dimensions of human life. It finds expression in what the author calls "spiritual science". Spiritual science is built upon a new set of assumptions about Reality and human nature, opens wider contexts and domains of knowledge, uses newly awakening faculties of perception such as faith, vision and justice, is expressed through a new mode of thought and language, and develops new moral virtues that enable new modes of individual and collective action and that create a new ethos or character to create a spiritually based civilization. Weaving together statements from the Bahá'i writings with insights and truths from the physical and social sciences, and from philosophies ancient and modern, Mr. Barnes launches an inquiry into the nature and structure of "spiritual science" and the conditions of its appearance.