The gesture which we would reproduce on canvas shall no longer be a fixed moment in universal dynamism. It shall simply be the dynamic sensation itse… - Umberto Boccioni

What was the truth for the painters of yesterday is but a falsehood today. We declare, for instance, that a portrait must not like the sitter.. .To paint a human figure, you must not paint it; you must render its surrounding [aura-like] atmosphere. Space no longer exists.. .Who can still believe in the opacity of bodies, since our sharpened and multiplied sensibilities has already penetrated the obscure manifestations of mediums? Why should we forget in our creations the doubled power of our sight, capable of giving analogous to those of X-rays?

Get all the information you can about the Cubists, and about Georges Braque and Pablo Picasso. Go to Kahnweilers' (Paris art gallery). And if he's got photos of recent works – produced after I have left -, buy one or two. Bring us [the Futurists in Italy, like Boccioni himself] back all the information you can get.

The time has passed for our sensations in painting to be whispered. We wish them in the future to sing and re-echo upon our canvasses in deafening and triumphant flourishes.