He thought of Musashi, the Sword Saint, standing in his garden more than
three hundred years ago. "What is the 'Body of a rock'?" he was asked.
In answer, Musashi summoned a pupil of his and bid him kill himself by
slashing his abdomen with a knife. Just as the pupil was about to comply,
the Master stayed his hand, saying, "That is the 'Body of a rock'."
-- Eric Van Lustbader