
It’s said that Don Quixote and his faithful squire Sancho Panza were riding their horses in the dark night when they heard the sound of dogs barking. Trying to console the frightened Sancho, Don Quixote uttered what may be the most quoted line attributed to him: “Let the dogs bark, Sancho, it’s a sign that we are on track.”
Today, the phrase is used to express the notion that if someone criticises (barks at) you, it’s a sign you are on the rise. Dogs bark at the moon, don’t they?