In April 1926, the Japanese poet Taneda Santoka (1882-1940) set off on the first of many walking trips, journeys in which he tramped thousands of miles through the Japanese countryside. These journeys were part of his religious training as a Buddhist monk as well as literary inspiration for his memorable and often painfully moving poems. The works he wrote during this time comprise a record of his quest for spiritual enlightenment.

Although Santoka was master of conventional-style haiku, which he wrote in his youth, the vast majority of his works, and those for which he is most admired,...