A bamboo brush is an extremely inefficient tool.  It takes years to
be able to draw a line the way you want to.  It may be compared to a
bamboo flute, the shakuhachi. to be able to make one note right on
the shakuhachi takes a long time.  But once you get it, the sound
is so profound that even one note is overwhelming.
	- Kazuaki Tanahashi, *Brush Mind*