Stan Tenen notes that the two primary names of God in the Hebrew Torah refer to the fundamental metaphysical principles of duality: the god within and the god without, god as a singular entity and god as infinite. The key insight of Judaism, that these principles are actually one, is embedded in the very structure and shape of the Hebrew letters. Tenen further explains that these letters can all be derived from a language of gestures – and suggests that this was the original language of humanity. Stan Tenen is Director of Research of the MERU Foundation. He has produced several videotapes including The Dance of the Hebrew Letters and Geometric Metaphors of Life is currently working on a book about the sacred geometry embodied in Genesis and the alphabet.