To know something means you can be held accountable. Pleading ignorance of that which you know is a dicey proposition. Your only hope is that others do not find out.
Information is bought and sold. People will even kill to learn the most well-guarded secrets. In the end, the lust for knowledge is merely a play for power.
What you do not know can hurt you. So it is imperative to be as informed as possible. But always be willing to admit there are things of which you are not aware.
Knowledge is all in your head. And the power that comes from such things is merely a shared illusion. When learning is eschewed, its might is rendered impotent.
Use what you know to make things better. Do not become conceited in your own understanding. For the pride you cling to will fall prey to a single revelation.