The first painting to appear with an affirmation of simultaneity was mine and had the following title: 'Simultaneous visions', [Boccioni painted in 1… - Umberto Boccioni

A profile is never motionless before our eyes, but it constantly appears and disappears. On account of the persistency of an image upon the retina, moving objects constantly multiply themselves; their form changes like rapid vibrations.. .To paint a human figure you must not paint it; you must render the whole of its surrounding atmosphere.

Not only have we radically abandoned the motive fully developed according to its determined and, therefore, artificial equilibrium, but we suddenly and purposely intersect each motif with one or more other motifs of which we never give the full development but merely the initial, central, of final notes.. .We thus arrived at what we call the painting of states of mind.

.. the number of the engine [of the train], its profile shown in the upper part of the picture, its wind-cutting fore-part in the center, symbolical of parting, indicates the features of the scene that remain indelibly impressed upon the mind [of the viewer].