What is the main content of the book Persuasion written by Fukuzawa Yukichi?

1872, Fukuzawa Yukichi published an important book called "Meiji Bible"-"Persuasion", which sounded the horn of Japanese marching into modern society. In this book, Fukuzawa Yukichi pointed out in a popular phrase: "Heaven does not give birth to people above, nor does it give birth to people below", and "all men are born equal, regardless of their rank". He urged China people to read more books, get in touch with new things and learn knowledge that is really useful to society. He believes that the success of a country's civilization depends on everyone's determination to learn and enrich their own strength. He advocates broadening our horizons, comparing things between the East and the West, believing them to be credible, suspecting them to be suspicious, taking what is desirable, giving up what is gained and getting the truth. "Persuade to Learn" puts forward traditional ideas and promotes utilitarianism and enterprising spirit. Fukuzawa Yukichi pointed his criticism at the shogunate, arguing that Asian absolutism and the Japanese Tokugawa era hindered the individual's physical and mental independence. Because "state power is concentrated in the royal family", "people are not specialized in state affairs", "civil status is not respected", "the right to believe in religion" and "the right to learn"; Then tell those people with humble status that if they want to embark on the road of independence, they must be determined to learn from the west, establish a civilized spirit, regard unrealistic learning as secondary, and devote themselves to practical learning close to the world. He believes that as long as you master such knowledge and increase your knowledge, "an individual can be independent, a person can be independent, and the country can be independent." Fukuzawa Yukichi called on people to break the traditional "custom of despising money", because "the pursuit of profit is to strive for rationality". This has played a beneficial role in actively introducing foreign advanced science and technology, bourgeois social and political theories and systems to Japan. As soon as this book was published, people rushed to buy and read it, and the sales volume reached more than 700 thousand copies, which had a great influence in the Japanese Enlightenment.