I love this quote:
We have sometimes called the Nine the crown of the Enneagram because it is at the top of the symbol and because it seems to include the whole of it. Nines can have the strength of Eights, the sense of fun and adventure of Sevens, the dutifulness of Sixes, the intellectualism of Fives, the creativity of Fours, the attractiveness of Threes, the generosity of Twos, and the idealism of Ones. However, what they generally do not have is a sense of really inhabiting themselves—a strong sense of their own identity.