Le Retour à la raison (French for Return to Reason) is a 1923 short film directed by Man Ray.

The film is described as follows:"consists of moving geometric designs, intercut with distorted night shots of a merry-go-round, then moving three dimensional shapes, and closing with the play of bars of light on a woman's nude torso.

"[2] "Acquiring a roll of a hundred feet of film, I went into my darkroom and cut up the material into short lengths, pinning them down on the worktable.

Then I carefully lifted the film off the table, shaking off the debris, and developed it in my tanks.

The next morning, when dry, I examined the work; the salt, pins and tacks were perfectly reproduced."