How can we account, in a rigorous way, for alchemy's ubiquity? We think of alchemy as the transformation of a base material (usually lead) into gold, but "alche

History of science credits the Flemish physician, alchemist and philosopher Jan Baptist Van Helmont (1579-1644) for his contributions to the development of chem

“[A] brilliant disquisition on . . . mostly unpublished texts for three allied systems of tantric thought and praxis (sexual, alchemical, and hatha yogic).”