Throw out your conceited opinion, for it is impossible for a person to begin to learn what he already thinks he knows.
~ Epictetus (Discourses 2.17.1)
How many of us think that we “know” all about something?
How many of us use that belief to not consider anything else?
Maybe, if we stopped thinking we had all the answers to things, we might be able to learn more about them.
