No doubt it is easy to imagine, by an illusion similar to that which makes everything on the horizon appear equidistant, that all the revolutions which have hitherto occurred in painting or in music did at least respect certain rules, whereas that which immediately confronts us, be it Impressionism, the pursuit of dissonance, an exclusive use of the Chinese scale, Cubism, Futurism or what you will, differs outrageously from all that has occurred before. This is because everything that went before we are apt to regard as a whole, forgetting that a long process of assimilation has converted it
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