What is religion and how does it originate? What are its functions and how does it work? These are some of the key questions addressed by theories of religion. Far from being a past concern, a series of new answers have been proposed since the beginning of our present millennium by evolutionary biologists and psychologists, philosophers, sociologists, and scholars of religion. In 21st Century Theories of Religion, Michael Stausberg is joined by leading scholars from Europe and North America to present and critically discuss fifteen contemporary theories. Contributions introduce the theoreticians, unpack their arguments, review their reception, and engage in critical debates. The volume provides a cutting-edge point of entry into a key conversation that no student and scholar of religion/s can afford to ignore. Chapter 1 of this book is freely available as a downloadable Open Access PDF at http://www.taylorfrancis.com under a Creative Commons Attribution-Non Commercial-No Derivatives (CC BY-NC-ND) 4.0 license. Chapter 3 of this book is freely available as a downloadable Open Access PDF at http://www.taylorfrancis.com under a Creative Commons Attribution-ShareAlike (CC BY-SA) 4.0 license.