In brief: Lady looks out window at neighbor's laundry line & remarks to her husband that neighbor's sheets still look dirty. This repeats several times until 1 day, she looks & sees the neighbor's sheets are sparkling white. "Did someone show her how to wash correctly?" she asks. "No," replies her husband, "I washed our windows this morning." Moral: Sometimes we criticize w/o really understanding, w/o thinking maybe we're in the wrong. It all depends on the glass/es you look through.