The various landscapes set loose in the spectator the same mechanism of thought or evocation whether they are in high relief or of a smoother surface. We recognize in them no definable object, no individual rock or tree; the human silhouettes that we can perceive are made of the same matter as the rocks....

Another way he likes to provoke our imagination is by confusing and mixing up scale; that is, the dimensions of the objects he represents remain extremely uncertain. In his landscapes, most of the time it is hard to say whether the picture represents a whole continent, a mountain, a cliff, or only a very small bit of ground. (exh. cat., Jean Dubuffet, Arthur Tooth and Sons, London, 1958)