This is not a pipe.

In 1929, at the age of thirty, the Belgian artist Rene Magritte painted “The Treachery of Images.”  The painting showed a pipe, written underneath with the paradoxical inscription This is not a pipe (written in French of course). When it was pointed out to him that what he had created was in fact a pipe, Magritte replied “OK, you should try filling it with tobacco then.”

Published 10 years before the infamous WWII propaganda campaigns, Magritte’s warning was clear: Beware of the seductive and deceptive power of images.

Credit to: Beware of Images (click to read more)
Original image borrowed from Wikipedia