Meaning: I didn't realize it. Self-knowledge: Know yourself; Know your own situation and have a correct estimate of yourself.

from: The Book of Han Taiwei, an official from the Shang Shu Mi. Su Zhe, Song Dynasty

Excerpt:

Looking at his articles today, he is generous and broad-minded, which is full of heaven and earth, and he is called small and big. Taishigong traveled all over the world, visited famous mountains and rivers all over the world, and made friends with Yan and Zhao Jian Haojun, so his prose was sparse and quite strange. This second son, how can he taste writing as such an essay? Its qi is full of it, but it overflows its appearance. It depends on its words, but it depends on its text, without knowing it.

Translation:

Now look at his articles, which are broad, heavy, magnificent and broad, filling the space between heaven and earth, and matching the size of other qi. Sima Qian traveled all over the world, visited famous mountains and rivers all over the world, and made friends with heroes and heroes between Yan and Zhao, so his articles were uninhibited and quite magnificent.

Have these two people ever learned to write such articles? This is because their qi is full of their hearts, which is exposed to their appearance, expressed in words and expressed as articles, but they are not aware of it.

Extended information

China has a classic saying: "People are expensive and know themselves". On the gate of a temple of wisdom in ancient Greece, there was also a proverb: "Know yourself", and the ancient Greeks regarded it as an "Oracle" and a symbol of the highest wisdom. Many philosophers have warned people that visibility and self-knowledge are very important to life.

the main reason why I can't see myself clearly is the same reason that I can't see the true face of Lushan Mountain when I am in Lushan Mountain. To make himself self-aware, he has to jump out of his small circle and analyze and evaluate himself from the standpoint of a bystander. Confucius said that he reflected on himself three times a day. Introspection is to examine yourself as an object and make yourself your own judge.