Lao Tzu's famous sayings about humility are:

1. Those who know do not speak, and those who speak do not know. It means: Smart and wise people are usually more modest and don't talk too much casually. And those who like to be teachers and talk endlessly are often fools who do not understand thoroughly.

2. He who knows others is wise, and he who knows himself is wise. People are self-aware, and only those with correct self-understanding and self-positioning can be modest, modest, and courteous.