The Doctrine of the Mean Passage 31

Zhong-ni handed down the doctrines of Yao and Shun, as if they had been his ancestors, and elegantly displayed the regulations of Wen and Wu taking them as his model. Above, he harmonized with the times of Heaven, and below, he was conformed to the water and land. He may be compared to Heaven and Earth in their supporting and containing, their overshadowing and curtaining, all things. He may be compared to the four seasons in their alternating progress, and to the sun and moon in their successive shining. All things are nourished together without their injuring one another. The courses of the seasons, and of the sun and moon, are pursued without any collision among them. The smaller energies are like river currents; the greater energies are seen in mighty transformations. It is this which makes heaven and earth so great.