People go on collecting knowledge and get mixed up and start thinking that this knowledge is wisdom. Knowledge is not wisdom.
Wisdom comes through your growth of consciousness, and knowledge comes through collecting from the scriptures, from learned people, and making some sort of a system. But you remain the same; you don't go through any transformation.
Hence, the first sutra: NOT TO LET GO OF WISDOM IS STUPIDITY. Just drop your wisdom and with your wisdom gone, your stupidity will also be gone. If you cling to your knowledge, which you think is wisdom, you will remain stupid forever.
-Osho, “Bodhidharma: The Greatest Zen Master, #11“