Ren Magritte –The Treachery of Images (This is Not a Pipe), 1929

The text below the painting communicates a simple concept that any viewer can grasp quickly. It is not a pipe

but a drawing of a pipe. The question “If it is not a pipe, what it is?” is more profound than just a question

that needs an answer. What seems to be a mere linguistic gaffe is a deliberate design in the way that

language was constructed.

https://publicdelivery.org/magritte-not-a-pipe/