In this beautifully written and concise book, Professor Corrington presents to the reader the capstone of his six previous books as they have developed his unique perspective of ecstatic naturalism. This form of naturalism, while rooted in classical Euro-American forms of naturalism (think of Dewey and Buchler here), makes a decisive break with the past by arguing for the primacy of the unconscious dimension of nature and for the reality of the potencies that enter into the world often when they are least expected. In order to frame his general philosophy, he engages in an ongoing respectful dialogue with psychoanalysis (especially that of Jung, Reich, and Kristeva), semiotic theory in the Peircean tradition, and a universalistic religiosity apparently shaped by his encounters with Hinduism and American Unitarianism. One of the key distinctions in the book is that between nature naturing (which he calls the underconscious dimension of nature) and nature natured (what he calls the world and all that it contains). Nature is not split into two halves, but exhibits two dimensions, the first of which is rarely probed by philosophy. He has an almost mystical sense of the presemiotic ground of nature and sees it as the birthing ground of the potencies (taking this word from Schelling). The other dimension of nature natured is explored in terms of an evolutionary semiotics that is bold enough to see sign usage in all of the prehuman order of the world. His phenomenological descriptions of these processes are often quite powerful. In this condensed but readable text he deals with the specific issues of what he calls the four infinities, the archetypes, the nature of time, the structure of the sign itself, the traits of natural verses interpretive communities, and concludes with a description of four types of sacred folds (a concept that he developed in his previous book Nature's Religion). Corrington already has a small but growing community of sympathetic interlocutors, and with the publication of this book from the distinguished Cambridge University Press, this community is sure to grow further. I can give this book my highest recommendation and I see it as an important milestone in the development of Corrington's ecstatic naturalism.