Yeno (Hui-neng, 638-713) writes:
The Bodhi* is not like the tree;
The mirror bright is nowhere shining:
As there is nothing from the first,
Where does the dust itself collect?
This was written in answer to a stanza composed by another Zen monk who claimed to have understood the faith in its purity. His lines run thus:
This body is the Bodhi-tree;
The soul is like the mirror bright;
Take heed to keep it always clean,
And let no dust collect upon it.
A nice example of the conflict between knowledge and knowing of a logical sort, and the wisdom of be-ing which Zen produces in a practitioner. The latter is business-as-usual, mega-churches, and MacDonalds; the former is living, spirit-in-motion, and sustenance.
* True Wisdom