Ethically, Laozi advocates simplicity, selflessness, serenity, humility, gentleness, weakness and indifference. Politically, Lao Tzu advocates doing nothing at home, not disturbing the people, living in peace with foreign countries and opposing war and violence.
These three levels constitute the theme of Tao Te Ching, and at the same time make the book go through the logical level of "physics to philosophy to ethics to politics", from the way of nature to the virtue of ethics, and finally settle in the idea and governance of ideal politics.
Extended data:
Laozi's original intention was to teach people how to practice Buddhism. Morality is the foundation, and Taoism is the sublimation of morality. Without the foundation of virtue, you are likely to fail in dealing with people, managing your family and governing the country, and you will not be able to "cultivate Buddhism."
Therefore, cultivating "virtue" is to create a good external environment for monasticism, which may also be needed by people; Being a monk requires a quiet mind and a detached life, which is also indispensable for virtue. The moral part of Tao Te Ching accounts for a large part of the Confucian classics, which is the basis of monasticism.
"Tao" is the overall simplicity, and "Wan Qi Gate" and "Tao" have produced all things and are included in all things. "Tao" is in things, and things are in "Tao". Everything leads to the same goal by different routes, and it leads to the Tao.