A mixed experience. The basic premise of examining the connection between definition and explanation is useful. The chapters are intelligent attempts at assessing the philosophical consistency of theories of religion, divided here into religious, philosophical, socio-economic, sociological, and psychological varieties. On the other hand, the authors espouse a strange version of methodological agnosticism. Instead of phenomenologically bracketing the objects of belief, they consider any theory postulating the source of religion beyond that object of belief (e.g. society instead of God) to be 'radical'. The theological/religious side shows especially in the chapter on the philosophy of explanation, which tries hard to argue for openness to religiously-based explanation. Nevertheless, an interesting read and something that I would like to see rewritten for a contemporary audience.