Yin and yang rise and fall in degrees, flexible and reasonable, and benevolence and righteousness advance and retreat in degrees. Those who know can discuss politics, those who know reason can seek things, and those who know the law can learn from them. Knowingly commit a crime. The rise and fall of Yin-Yang Qi has its own natural laws, and its strength has its own internal laws, so it is necessary to push forward with benevolence and righteousness. A man who knows heaven can discuss politics with him, a man who knows law can seek things with him, and a man who knows statutes can choose people with him. He who knows the way of heaven gets the law of things, and he who knows the law of things gets the statutes, so a gentleman knows the importance of heaven.