Note 35 — Chapter VI · THE CONVERSION OF THE SAXONS.
Reading edition
According to ancient Greek mythology, Sisyphus was, for his great wickedness, condemned in Hades to roll a great stone from the bottom to the top of a hill; but before he reached the top, the stone broke away and rolled down again, so that his task had to be begun anew, and thus it resulted in endless and tantalizing monotony.