The Doctrine of the Mean. Chapter 24.
It is characteristic of the most entire sincerity to be able to foreknow. When a nation or family is about to flourish, there are sure to be happy omens; and when it is about to perish, there are sure to be unlucky omens. Such events are seen in the milfoil and tortoise, and affect the movements of the four limbs. When calamity or happiness is about to come, the good shall certainly be foreknown by him, and the evil also. Therefore the individual possessed of the most complete sincerity is like a spirit.
Text source: The Doctrine of the Mean. Translated by James Legge.