The thought of original spirit is but the reflection of that spirit in 
a particular mind, as the image of the moon seen in the water of 
a pond is but a reflection of the moon. Original spirit remains 
present, unchanged and unaffected by the tumult of your 
thoughts and acts, as the moon remains unchanged and 
unaffected whether the water in the pond be clear or muddy, 
calm or agitated or whether the pond be full or empty. It is only 
the image of the moon which is changed or absent in such case.
There is no moon in the pond.   
                                                  Ol Man Tcheng