Why is it that our memory is good enough to retain the least triviality that happens to us, and yet not good enough to recollect how often we have told it to the same person?

Every one complains of a poor memory, no one of a weak judgment.

Everyone complains of his memory, and nobody complains of his judgment.

People always complain about their memories, never about their minds.

Everyone blames his memory, no one blames his judgment.