The famous sayings about Kao Renjing (1864-1909), whose ancestral home is Changde Prefecture, Hunan Province, were originally named Kao Renjing, and whose nickname was Youru. A native of Changheng Mountain. He is a famous enlightenment thinker, politician and educator in modern China, and one of the important figures in China's modernization process.

Kao Qinjing once said many classic sayings, the most famous of which is: "Education must be popularized." This sentence reflects his emphasis on education and the need to promote it.

He believes that education is the key to solving China's social problems. Only through universal education can we change the current situation of poverty and backwardness and improve the quality and competitiveness of the entire country. This sentence not only has profound educational significance, but also has great historical and practical significance.

In addition, Kao Qinjing once said: "Abandoning evil and doing good is education." This sentence means that as long as there is a will, everyone can get rid of bad habits and change themselves through hard work. It also means that education cannot just stop at knowledge, but should also focus on the cultivation of morality, ideology and personality, so that they can become comprehensive talents with both ability and political integrity.

Kao Qinjing was also an enlightened scholar who opposed old ethics and advocated new ideas. In his view, China is facing a historical opportunity to get rid of the shackles of feudalism and strive for national independence and people's happiness. Therefore, he once said: "Without truth, there is no progress; without freedom, there is no truth."

This sentence expresses his desire for freedom, democracy, and progress in a profound form. At the same time, it also reflects the current situation of Chinese society in the long-term crisis of feudalism in the past.

Finally, Kao Qinjing also affirmed the importance of science and culture. He said: "The power of knowledge and science is the most primitive, strongest and cannot be eliminated among all kinds of forces." This sentence illustrates that knowledge and science are an indispensable part of the country and nation, and have strong influence and irreplaceable utility.

In general, the famous saying of "testing relatives and respecting elders" has brought us a lot of inspiration and thinking, and has made significant contributions to the development of education, morality, thought and culture in the process of China's modernization. His thoughts and spirit will continue to influence China's modernization process and future.