SATOR Magic Square
SATOR AREPO TENET OPERA ROTAS
The SATOR Square
In this Magic Square the words read the same backwards and forwards, horizontally and vertically. It was used for protection and for overcoming danger and difficulties.
The words are Latin, and the earliest examples are from 1st century Pompeii. It was often scratched on the walls of houses, or written out on paper as a charm by cuning folk for their clients.
The exact meaning of the words is uncertain, but is probably something like. "The Creator, to whom I appeal for help, controls all our endeavours and all the changes of fortune that befall us."