Interestingly, "The Book of Mu" cites the following as a waka poem written by an old Japanese Zen Master. When your bow is broken and your arrows are exhausted, There, shoot! Shoot with your whole being! -- The Book of Mu While an internet search has the following line written by Roger Zelazny, an American writer of fantasy and science fiction short stories and novels. When your bow is broken and your last arrow spent, then shoot, shoot with your whole heart. -- Roger Joseph Zelazny ...