Book excerpt: The Book of Changes [I Ching or Chou I] was the first of the Five Confucian Classics and served as the wellspring of both Confucian and Taoist thought. Following in the tradition of his father, Richard Wilhelm, who made the best known and most respected translation of the I Ching, Hellmut Wilhelm came to be regarded as a preeminent authority on the Book of Changes. In these seven lectures, he carried forward his inquiry into its significance, both as a manual of divination and as a work of philosophy.