One day, Diogenes began a philosophical lecture in the city square. No one listened to him. Then Diogenes spoke with the birds, and a hundred birds gathered around. “Behold, Athenians, the price of your mind,” Diogenes said to them. “When I told you wise things, no one paid attention to me, and when I cried like a foolish bird, you listened to me with your mouth shaken. c) Wiki
Look for the analogy yourself.