We tend to be very quick about finding faults in others, though we do not tolerate advice ourselves. Nothing shows our weakness more than to be so sharp-sighted at spotting others' faults, and so short-sighted about our own.
When our neighbor's actions are on the stage, our wits are sharp. We are so vigorously critical that we can split hairs, spotting every fault and weakness, but we are unaware of our own faults, or nearly so.
— William Penn, Some Fruits of Solitude by William Penn, Erik K. Taylor, editor