Chapter IV - The deeper meaning of the Book of Change
IV - 1
The I was made on a principle of accordance with heaven and earth, and reveals therefore, without rent or confusion, the Tao of heaven and earth.

IV - 2
The sage, in accordance with the I, looking up contemplates the brilliant phenomena of the heavens, and looking down examines the definite arrangements of the earth; thus he knows the causes of what is obscure and what is light. He traces things to their beginning and follows them to their end; thus he knows what can be said about death and life. Essence and breath form things, and the wandering away of the soul produces the change; thus he knows the characteristics of the in- and outgoing spirits.

IV - 3
There is a similarity between him and heaven and earth, and hence there is no contrariety in him to them. His knowledge embraces all things, and his Tao is helpful to all under the sky; hence he falls into no error. He acts according to the exigency of circumstances without being carried away by heir current. He rejoices in heaven and knows its ordinations; and hence he has no anxieties. He rests in his own position and cherishes the spirit of generous benevolence; hence he can love without reserve.

IV - 4
Through the I, he comprehends as in a mould the transformations of heaven and earth without any error. By an ever-varying adaption he completes all things without exception; he penetrates to a knowledge of the Tao of day and night and all connected phenomena. It is thus that his operation is spiritlike, unconditioned by place, while the changes that he produces are not restricted to any form.