This image is after a form of Japanese ink painting called "haiga." Traditionally done by poets these were simple, spare, ink drawings accompanied by a haiku poem.

The title of this painting, incorporated in the lower right corner, calls forth perhaps the most well known haiku by Matsuo Basho (1644 -1694). Some believe that this poem signaled Basho's enlightenment:

old pond
a frog jumps into
the sound of water

For fun, here's another translation:

still pond
a frog jumps in
kerplunk!