" According to tradition, the originator of Taoism, Lao-tzu, was an older contemporary of Kung Fu-tzu, or Confucius, who died in 479 B.C.1 Lao-tzu is said to have been the author of the Tao Te Ching, a short book of aphorisms, setting forth the principles of the Tao and its power or virtue (Te e). But traditional Chinese philosophy ascribes both Taoism and Confucianism to a still earlier source, to a work which lies at the very foundation of Chinese thought and culture, dating anywhere from 3000 to 1200 B.C. This is the I Ching, or Book of Changes. "

― Alan W. Watts , The Way of Zen