A certain Roshi, who is a world-renowned calligrapher, told this, how he had made a pilgrimage to the birthplace of Rinzai in China. Upon arriving at the village Lin Chi hails from, the villagers proclaimed "We have a calligrapher here too!"
The Roshi was immediately reminded of the Zen Story "Old Calligrapher. "This is the story:
Once upon a time, an old calligrapher is brought before a monk to give a calligraphy demonstration. From beneath his tattered garments the peasant brought forth an ancient brush, so worn out it only had a few hairs remaining. Encrusted with dried ink, he proceeded to chew on the said 2-3 hairs of the brush with his one remaining incisor.
The monk questioned "How can you write with that brush?"
Old Calligrapher replied: "One tooth full at a time."
as paraphrased by hansen, story by Fukushima Keido Roshi (as I remember it)