The moon shines by reflecting the light of the sun. When the sun has set, the moon is useful for displaying objects. When the sun has risen no one needs the moon, though its disc is visible in the sky. So it is with the mind and the heart. The mind is made useful by its reflected light. It is used for seeing objects. When turned inwards, it merges into the source of illumination which shines by Itself and the mind is then like the moon in the daytime."