Aesop's Fables. Translated by Rev. George Fyler Townsend. 1860.

A Flea settled upon the bare foot of a Wrestler and bit him, causing the man to call loudly upon Hercules for help. When the Flea a second time hopped upon his foot, he groaned and said, "O Hercules! if you will not help me against a Flea, how can I hope for your assistance against greater antagonists?"