Fool me once

Does anyone know the origins of "Fool me once, shame on you. Fool me twice, shame on me."
thanx

Here's all I know:

FOOL ME ONCE, SHAME ON YOU; FOOL ME TWICE, SHAME ON ME - "Anyone who falls for the same deceit twice must accept responsibility for his own gullibility; thus, one should be more watchful the next time around. Originally a child's saying." From the Random House Dictionary of Popular Proverbs and Sayings by Gregory Y. Titelman (Random House, New York, 1996).