Never had the critics been so violent as they were at that time. From which it became clear that these paintings - and I specify the names of the painters who were, alone, the reluctant causes of all this frenzy: Jean Metzinger, Le Fauconnier, Fernand Léger, Robert Delaunay and myself - appeared as a threat to an order that everyone thought had been established forever.

The Epic, From immobile form to mobile form (1925)