「古池や蛙飛び込む水の音」- Furuike ya kawazu tobikomu mizu no oto

"Ancient pond, a frog leaps in, the splash of water"

Basho was the most famous poet of the Edo period (historical period between 1603 and 1868; Basho lived from 1644 to 1694), and is still recognized as the greatest haiku master that ever existed.

This one haiku, called Ancient pond, is the best-known and most iconic haiku in Japan and worldwide.