Expression, to my way of thinking, does not consist of the passion mirrored upon a human face or betrayed by a violent gesture. The whole arrangement of my picture is expressive. The place occupied by figures or objects, the empty spaces around them, the proportions – everything plays a part. Composition is the art of arranging in a decorative manner the various elements at the painter's disposal for the expression of his feelings

p. 410 - 'Notes d'un Peintre', (Notes of a Painter), H. Matisse (1908)