"Philosophical naturalism has dominated the Western academy for well over a century. According to Michael Rea, however, there is an important sense in which naturalism's status as orthodoxy is without rational foundation, and the costs of embracing it are surprisingly high. The goal of World Without Design is to defend these two claims, with special attention to the second." The first part of the book aims to provide a fair and historically informed characterization of naturalism. The second part argues for the striking thesis that naturalists are committed to rejecting realism about material objects, materialism, and perhaps realism about other minds. Rea concludes by examining two alternative research programs: intuitionism and supernaturalism, and argues for the conclusion that, under certain circumstances, intuitionism is self-defeating.