I have read many books on I Ching but this is the best byfar. It is the only one which made its history as a text clear tome. The so called Zhouyi is the portion set in writing during the Zhou(later Chinese bronze age). Most of what we consider I Ching is actually commentary from the Han, half a milennium later. Rutt restores the early primitive text which was used for such things as deciding the auspicious occasion for (human?) sacrifices. Rutt sees the Zhou Yi as neither moral or spiritual. We can then see how the Confucian tradition made something quite different of the text with the addition of the Ten Wings. Rutt translates the original Zhou text which consists of what are the hexagram statements and line texts in later forms.He also translates the Ten Wings separately, rather than mixed with the Zhou text as Wilhelm and later Chinese editions do. Rutt's book is the best on the actual, as opposed to mythical text of the Changes. Yet he includes its history in the west and a section entitled, the Fascination of Zhouyi. If you have a serious interest in I Ching, you MUST read this book. It does not supercede the classic Wilhelm/Baynes translation but does far better in letting us see it also as an ancient Chinese text.