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It should also be born in mind that the research on 'movement' and the dynamic outlook on the world, which were the basis of Futurist theory, in no way required one to paint nothing but speeding cars or ballerinas in action; for a person who is seated, or an inanimate object, though apparently static, could be considered dynamically and suggest dynamic forms. I may mention as an example the 'Portrait of Madame S.' (1912) and the 'Seated Woman' (1914).

"Letters of the great artists". Book by Richard Friedenthal, p. 248, 1963.
It should also be born in mind that the research on 'movement' and the dynamic outlook on the world, which were the basis of Futurist theory, in no way required one to paint nothing but speeding cars or ballerinas in