When we examine what each master says was his first collage we see that much the same thing happens in each. (It makes no real difference that Braque's collage is on paper and eked out in charcoal, while Picasso's is on canvas and eked out in oil.) By its greater corporeal presence and its greater extraneousness, the affixed paper or cloth serves for a seeming moment to push everything else into a more vivid idea of depth than the simulated printing or simulated textures had ever done. But here again, the surface declaring device both overshoots and falls short of its aim. For the illusion of depth created by the contrast between the affixed material and everything else gives way immediately to an illusion of forms in bas-relief, which gives way in turn, and with equal immediacy, to an illusion that seems to contain both -- or neither.
Because of the size of the areas it covers, the pasted paper establishes undepicted flatness bodily, as more than an indication or sign. Literal flatness now tends to assert itself as the main event of the picture, and the device boomerangs: the illusion of depth is rendered even more precarious than before. Instead of isolating the literal flatness by specifying and circumscribing it, the pasted paper or cloth releases and spreads it, and the artist seems to have nothing left but this undepicted flatness with which to finish as well as start his picture. The actual surface becomes both ground and background, and it turns out -- suddenly and paradoxically -- that the only place left for a three-dimensional illusion is in front of, upon, the surface. In their very first collages, Braque and Picasso draw or paint over and on the affixed paper or cloth, so that certain of the principal features of their subjects as depicted seem to thrust out into real, bas-relief space -- or to be about to do so -- while the rest of the subject remains imbedded in, or flat upon, the surface. And the surface is driven back, in its very surfaceness, only by this contrast.