Can real knowledge be found other than by science? In this unique approach to understanding today's culture wars, an MIT physicist answers emphatically yes. He shows how scientism --- the view that science is all the real knowledge there is --- suffocates reason as well as religion. Tracing the history of scientism and its frequent confusion with science, Hutchinson explains what makes modern science so persuasive and powerful, but restricts its scope. Recognizing science's limitations, and properly identifying what we call nature, liberates both science and non-scientific knowledge.