A monk asked the Chinese Ch'an master Chien Paling:
-What is the difference between the meaning of the Sutras and that of the Patriarch?
The master replied:
-When it is cold, hen would go up on a tree and duck down to water.
You can lift a dogs ear and say "dogs ear". It would be painful to seperate the dog ear from dog only to quantify it without the rest of the dog. Spiritual experience is part of mundane experience, they amplify one another. Dualism generates these frame of reference which cloud multiple reference points. This is just a metaphor, just one frame of refrence attempting to recognise others.