"Law protects the world and virtue moistens people's hearts" means that law can stabilize the world and virtue can nourish people's hearts. Law is a code of conduct formulated and enforced by the state, while morality is a code of conduct adjusted by people's inner beliefs, traditional habits and ideological education. It shows that national and social governance needs the joint action of law and morality.

From a modern phrase.

Law: the general name of the code of conduct that embodies the will of the ruling class, is formulated or recognized by the state, and is guaranteed to be implemented by the state's coercive force, including laws and decrees. "Lu Chunqiu Cha Jin": "Therefore, the chaos of governing the country is contrary to the law."

An: There is no threat, no danger, no injury or loss, as opposed to "danger". Er Ya Jie Xia: "An,"

Tianxia: Ancient refers to all the land within the scope of China; The whole country. Book Dayu Mo: "Elect the four seas to be the king of the world."

Morality: the norms and principles of people's common life and behavior. Zhuge Liang's "Commandment" said: "A gentleman's trip is to cultivate one's morality by quietness and frugality."

Run: The original meaning is that rain flows downwards and moistens everything. Du Fu's "Delighting in Rain on a Spring Night": "Sneak into the night with the wind, moisten things silently."

Human heart: human heart. Mencius under Teng Wengong: "I also want to be upright, stop heresy, walk away from others and say obscene things to inherit the Three Sages."