Colour could give rise to sensations which would interfere with our [Braque & Picasso's, in the start of Cubism] conception of space. - Georges Braque

To avoid a projection towards infinity I am interposing overlaid planes a short way off. To make it understood that things are in front of each other instead of being scattered in space.

In art progress consists not in extension but in the knowledge of its limits.

The only valid thing in art is that which cannot be explained. To explain away the mystery of a great painting – if such a feat were possible – would be irreparable harm.. .If there is no mystery then there is no 'poetry', the quality I value above all else in art. What do I mean by 'poetry'? It is to a painting what life is to man.. .For me it is a matter of harmony, of rapports, of rhythm and – most important for my own work – of 'metamorphosis'