The Treachery Of Images (La trahison des images) (1928–1929) is probably his most famous painting. The picture is more commonly known as 'Ceci n'est pas une pipe' or 'This is not a pipe'.
The viewer is encouraged to consider the distinction between reality and the representation of reality.
A common figure appearing in many of his paintings is a faceless, non-descript man in a suit wearing a black bowler hat. Frequently this figure would appear multiple times in the same painting--a metaphor for the normalizing power of modern existence and the doldrums of social constructs such as "the workday."