A person's strength is always small, and what he can know is limited. There is always someone who is better than himself in some aspects, and there is always something he doesn't understand, so he must ask. Although "a clear conscience" is a phrase we often say, it is really difficult to implement it.

This is not only a question of learning well, but also a question of self-esteem and vanity. If you are humble, weak and ignorant, there seems to be no shame in asking a respected person, a powerful person and a well-informed person for advice. Once I ask for advice from a position of respect, I feel inferior, I feel cowardly from a position of strong ability, and I feel widowed from a position of wealth. I immediately feel humiliated and ashamed to speak. To let vanity block your mouth is to block the door to knowledge. If you have an open mind in your life, you will benefit for life.