When ignorance knows that it does not really know, it becomes humble. Then there is a possibility that this kind of ignorance can be broken at some time. But if ignorance is under the illusion that it knows, then the ignorance becomes egoistic; it is strengthened by its own arrogance and conceit. It becomes difficult to break. So it is possible that a truly ignorant person can teach the divine, but the arrogant and conceited scholar can never reach.