Learning should always be used in practice. Learning without practice is almost equal to not learning, and learning without practice is also boring. The implication of this sentence is that we can't read the Analects for the sake of reading it. The purpose of reading the Analects is to apply Confucian theory to concrete practice, which is pleasant and everyone can get their own spiritual satisfaction from it. By extension, we can also understand that life is a process of learning, practicing, learning and practicing again.

2. Knowing means knowing, and not knowing means not knowing.

In the face of incomprehensible problems, we must seek truth from facts. Knowing is knowing. Don't pretend you don't know anything, cheat, and study, too. When you encounter problems you don't understand, you should ask for advice humbly.

3, a threesome, there must be my teacher.

When three people walk together, there must be a teacher worth learning. Choose their advantages and learn from them; We should correct their shortcomings according to our own situation. This expresses an extremely modest learning attitude. No matter who has a skill and knowledge, you should learn from him, learn from other people's shortcomings and mistakes, and don't repeat the same mistakes.