'Glenn Alexander Magee has brought together a 'dream team' of scholars, and from an impressively broad range of generations, from esteemed senior doyens to emerging young intellectuals about to reshape the conversation once again. Magee also brings his own trademark philosophical clarity to the definitional and historical tasks at hand. The result is a cutting-edge collection of essays that delivers exactly what it promises: a concise and clear map of the hidden intellectual tradition of the West from ancient Greece to today.' Jeffrey J. Kripal, J. Newton Rayzor Professor of Religion, Rice University, Houston, and author of The Serpent's Gift: Gnostic Reflections on the Study of Religion