It is Not Mind, It is Not Buddha, It is Not Things
    from http://www.people.virginia.edu/~btd2z/document/zenf.htm

A monk asked Nansen: `Is there a teaching no master ever preached before?'

     Nansen said: `Yes, there is.'

     `What is it?' asked the monk.

     Nansen replied: `It is not mind, it is not Buddha, it is not things.'

Mumon's Comment: Old Nansen gave away his treasure-words. He must have been greatly upset.

     Nansen was too kind and lost his treasure.
     Truly, words have no power.
     Even though the mountain becomes the sea,
     Words cannot open another's mind.