The books in this two-volume series present the most important tools and information on how to utilize the Book of Changes (I Ching). The Book of Sun and Moon, an alternative-though accurate-translation for the title of the I Ching, is both a book of divination and calculation. Its use in divination means to apply intuition concerning the oracle of the hexagrams (the sixty-four images of broken and unbroken Yin-and-Yang lines)...