It should be said that such an art would be neither more false nor more true than classical art. - Jean Metzinger

Cézanne showed us forms living in the reality of light; Picasso gives us a material report of their real life in the mind. He establishes a free, mobile perspective, in such a way that the shrewd mathematician Maurice Princet has deduced an entire geometry.

The excuse that the painters were documenting reality was becoming ridiculous. Photographers and film makers went far beyond them. Already it could be said that a good portrait led one to think about the painter not the model.

If we wished to relate the space of the [Cubist] painters to geometry, we should have to refer it to the non-Euclidean mathematicians; we should have to study, at some length, certain of Riemann's theorems.