It is important to remain teach-able.
If you are not learning, and you are not hungry to better yourself, you are on a shelf-life already, your time is ticking.
Your effectiveness and your relevance is short-lived if you are not still teach-able.
What is the greatest attribute of a leader?
I think it is teach-ability, the hunger to want to learn.
As a leader, you have to be hungry to learn.