The I Ching, or "Book of Change," is considered the oldest of the Chinese classics and has throughout history commanded unsurpassed prestige and popularity. Containing several layers of text and given numerous levels of interpretation, it has captured continuous attention for well over two thousand years. It has been considered a book of fundamental principles by philosophers, politicians, mystics, alchemists, yogins, diviners, sorcerers, and more recently by scientists and mathematicians