January 21

Know thou, verily, the brilliant realities and sanctified spirits are likened to a shining crescent. It has one face turned toward the Sun of Truth, and another face opposite to the contingent world. The journey of this crescent in the heaven of the universe ends in (becoming) a full moon. That is, that face of it which is turned toward the divine world becomes also opposite to the contingent world, and by this, both its merciful and spiritual, as well as contingent, perfections become complete. 
- ‘Abdu’l-Baha  (Tablets of ‘Abdu’l-Baha, vol. 1)