l？ Source:

This sentence is from the Book of Rites? Learn to remember? Jade is not cut, not a tool; People don't learn or know. Is it the king of the past, the founding of the country and the people, teaching first? Medium. Military and civilian: governing the people. Its meaning can be interpreted as: jade can't be carved without carving; People don't learn and don't understand reason. Therefore, when the ancient emperors founded the country and governed the people, they all put education and learning first.