"I cannot recall reading as clear a statement of the perennial philosophy, nor one as solidly based on empirical research, as I have read in this book. The topic of 'primordial tradition' or 'perennial philosophy' is important in the area of the history of religions, and there are precious few books that deal with it in a sympathetic and yet critical way. Coomaraswamy is mentioned often and honorably in religious studies literature without telling us much about why. Guénon usually is idolized or vilified, if he is acknowledged at all. Books such as Quinn's, that treat these influential figures honestly and fairly but with an open and critical eye, fill a real need." — James Burnell Robinson, University of Northern Iowa