…the inner reality of man is a demarcation line between the shadow and the light, a place where the two seas meet; it is the lowest point on the arc of descent, and therefore is it capable of gaining all the grades above. With education it can achieve all excellence; devoid of education it will stay on, at the lowest point of imperfection.
- ‘Abdu’l-Baha (‘Selections from the Writings of ‘Abdu’l-Baha’)