And when this has been done either in a simple harmony or a more elaborate one, with the true feeling of a colorist, no alteration can be made in any part of the picture without producing a discord, destroying, that is to say, the exquisite balance of the whole. I mean, that if, for instance, you were to cut off a part of the picture in order to make it fill a frame, you would destroy the harmony of the whole. For now the relation of the colors will have been disturbed. There is no longer the same balance in the quantity of each, nor do they occupy the same related position in the composition.