If we could imagine such a man, that is a man who could invent the fly and send him out on his mission and furnish him with his orders: Depart into the uttermost corners of the earth and, diligently do your appointed work. Persecute the sick child, settle upon its eyes, its face, its hands, and gnaw and pester and sting, worry and fret and madden the worn and tried mother who watches by the child and humbly prays for mercy and relief with the pathetic faith of the deceived and the unteachable.
Mark TwainA brown spotted lady-bug climbed the dizzy height of a grass blade, and Tom bent down close to it and said, "Lady-bug, lady-bug, fly away home, your house is on fire, your children's alone," and she took wing and went off to see about it -- which did not surprise the boy, for he knew of old that this insect was credulous about conflagrations, and he had practised upon its simplicity more than once.
Mark Twain