Book excerpt: One of the most influential American philosophers of our time presents his vision for a fully integrated world—a world that includes body, mind, soul, and spirit In this groundbreaking book, Ken Wilber uses his widely acknowledged “spectrum of consciousness” model to completely rewrite our approach to such important fields as psychology, spirituality, anthropology, cultural studies, art and literary theory, ecology, feminism, and planetary transformation. What would each of those fields look like if we wholeheartedly accepted the existence of not just body and mind but also soul and spirit? In a stunning display of integrative embrace, Wilber weaves these various fragments together into a coherent and compelling vision for the modern and postmodern world.