Georg Feuerstein (1947-2012), specializing in yoga Indologist of German origin, is considered one of the world's leading authorities on the subject. His contribution to the study of spirituality and dialogue between East and West earned him the recognition of personalities as Mircea Eliade.

Author of more than thirty books on mysticism, yoga, tantra and Hinduism, was also editor and translator of Sanskrit original sources. In Castilian been published, among others, the following titles: Sacred Sexuality (1995), Spirituality in Numbers (1996), The Teachings of Yoga (2004) and Yoga. Introduction to the principles and practice of an ancient tradition (2011).