65 Was it not in the last age of Yin, when the virtue of Kâu had reached its highest point, and during the troubles between king Wăn and (the tyrant) Kâu, that the (study of the Yî) began to flourish? On this account the explanations (in the book) express (a feeling of) anxious apprehension, (and teach) how peril may be turned into security, and easy carelessness is sure to meet with overthrow. The method in which these things come about is very comprehensive, and must be acknowledged in every sphere of things. If at the beginning there be a cautious apprehension as to the end, there will probably be no error or cause for blame. This is what is called the way of the Yî.