Indeed, those who assume that they have the fewest flaws are often the ones most deeply flawed in the eyes of others. This is illustrated by one of Aesop’s fables, which says that each of us is born with two sacks suspended from our neck: one filled with the faults of others that hangs within our view and one hidden behind our back filled with our own faults. We see the flaws of others quite clearly, in other words, but we have a blind spot for our own.