Fable 303 - The Two Carrying-pouches

Once upon a time, when Prometheus created men, he hung from them two carrying-pouches. One of these contained the deficiencies
of other people and was hung in front. The other contained our own faults, which he suspended behind us. The result of this was that
men could see directly down into the pouch containing other people’s failings, but were unable to see their own.

One can apply this fable to the muddle-headed person who, blind to his own faults, meddles with those of
others which do not concern him at all.