Three crowns were bestowed upon the Jewish people:
1) The Crown of Royalty; it was given to David and his descendants forever.
2) The Crown of Kehunah (Priesthood); it was awarded to Aharon and his sons forever.
3) The Crown of Torah; It is accessible to all. If a Jew claims, "If only I had descended from royalty or priesthood, I would exert myself to achieve greatness," he is answered, "The Crown of Torah is available to all. Have you exerted yourself to become a talmid chacham (Torah scholar)? The Crown of Torah is the greatest crown of all.
- The Midrash Says