1. The Book of Changes is vast and great. When one speaks of what is far, it knows no limits. When one speaks of what is near, it is still and right. When one speaks of the space between heaven and earth, it embraces everything.
2. In a state of rest the Creative is one, and in a state of motion it is straight; therefore it creates that which is great. The Receptive is closed in a state of rest, and in a state of motion it opens; therefore it creates that which is vast.
3. Because of its vastness and greatness, it corresponds with heaven and earth. Because of its changes and its continuity, it corresponds with the four seasons. Because of the meaning of light and the dark, it corresponds with the sun and moon. Because of the good in the easy and the simple, it corresponds with the supreme power.