"To return to the root is repose.
Going back to one’s destiny is to find the eternal law.
To know the eternal law is enlightenment."
Tao Te Ching 16
"Look at Tao, and you do not see it; it is called colourless.
Listen to Tao, and you do not hear it; it is called soundless.
Reach for Tao and you do not touch it; is called the immaterial."