Section d'Or of revealing the complete process of transformation and renewal that had transpired since the onset of Cubism. The group seems to have adopted the name "Section d'Or" as both an homage to the mathematical harmony associated with Georges Seurat, and to distinguish themselves from the narrower style of Cubism developed in parallel by Pablo Picasso and Georges Braque in the Montmartre quarter of Paris. In addition, the name was to highlight that Cubism, rather than being an isolated art-form, represented the continuation of a grand tradition: indeed, the golden ratio, or golden section () had fascinated Western intellectuals of diverse
Crystal Cubism clearest and most intelligible definition of Cubism. At the outset of the First World War many artists were mobilized: Metzinger, Gleizes, Braque, Léger, de La Fresnaye, and Duchamp-Villon. Despite the brutal interruption, each found the time to continue making art, sustaining differing types of Cubism. Yet they discovered a ubiquitous link between the Cubist syntax (beyond pre-war attitudes) and that of the anonymity and novelty of mechanized warfare. Cubism evolved as much a result of an "evasion" of the inconceivable atrocities of war as of nationalistic pressures. Along with the evasion came the need to diverge further and further away