Wikipedia: The famous pipe. How people reproached me for it! And yet, could you stuff my pipe? No, it's just a representation, is it not? So if I had written on my picture 'This is a pipe', I'd have been lying!
— René Magritte
The painting is sometimes given as an example of meta message conveyed by paralanguage. Compare with Korzybski's "The word is not the thing" and "The map is not the territory" as well as Diderot's This is not a story.