We need both knowledge and experience. Neither remains constant all the time. The key is to strike a balance and integrate them effectively. Sometimes, our prior knowledge or experience prevents us from facing the bare facts or reality. We must let our minds be free, allowing our senses to do their work.Ancient philosophers, such as Laozi and Confucius, warn against human arrogance. Confucius says: "If you know it, you know it. If you don't know it, you don't know it; that is knowledge." (Analects 2:17: 知之爲知之, 不知爲不知, 是知也).
He also notes that a wise person is flexible, just like water (Analects 6:23: 知者樂水, 知者動).
Laozi remarks that the wise person acknowledges their own ignorance and observes small things, such as dust. (Daodejing 71: 知不知上, 不知知病; also Daodejing 52: 見小曰明).
One of the early beliefs in Buddhism is anicca, 諸行無常, which means that all things are impermanent. Socrates is known for his humility, which allowed him to see clearly because he did not possess hubris.
"Vanity of vanities, says the Teacher, vanity of vanities! All is vanity." (Eccl. 1:2; cf Gen 3:9).
*Note: The Hebrew word "hebel" (הֶבֶל) means "breath or vapor." Vanity is not the only translation of this word. The idea of "hebel" suggests that everything is transient.