“Ru-h-ru-h-ru-h-h-h-h. Pooh-ooh-ooh. Tick-tick-tick-tick. Pre. R-r-r-r-r-uh-h. Huh! Bang. Su-su-su-ur. Booh-a-ah. R-r-r-r. Pooh…multitude of sounds, all mixed together. Motorcars, buses, carts, carriages, people, lamp-posts, trees.. all mixed together; in front of cafés, shops, offices, posters, shop windows: multitude of things. Motion and standstills: different movement. Movement in space and movement in time. Multitude of images and all sorts of ideas. Images are veiled truths. All different truths form what is true. What is individual does not display all in a single image.... Ru-ru-ru-u-u. Pre. Images are boundaries. Multitude of images and all sorts of boundaries. Elimination of images and boundaries through all sorts of images. Boundary clouds what is true. Rebus: where is what is true? Boundaries are just as relative as images, as time and space.”

— Piet Mondrian

Mondrian's poem has strong connections with 'dynamism' of Futurism
Quote from his article 'The Grand Boulevards', Piet Mondriaan, in Dutch magazine 'De Groene Amsterdammer', 27 March 1920 pp. 4-5
1920's

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Do you have more details about the quote "Ru-h-ru-h-ru-h-h-h-h. Pooh-ooh-ooh. Tick-tick-tick-tick. Pre. R-r-r-r-r-uh-h. Huh! Bang. Su-su-su-ur. Booh-a-ah. R-r-r-…" by Piet Mondrian?

Piet Mondrian95

Peintre Néerlandais 1872–1944

Richard Corben (1940) American illustrator

[Garriock, P., Masters of Comic Book Art, Aurum Press, London, 1978, 56, 978-0-905664-05-7]</ref>}}

“A system can be defined as a set of elements standing in interrelations. Interrelation means that elements, p, stand in relations, R, so that the behavior of an element p in R is different from its behavior in another relation, R’. If the behaviors in R and R’ are not different, there is no interaction, and the elements behave independently with respect to the relations R and R’.”

Ludwig von Bertalanffy (1901–1972) austrian biologist and philosopher

Source: General System Theory (1968), 3. Some System Concepts in Elementary Mathematical Consideration, p. 55-56

“This whole thing about who should get a check, and should we cut checks, you know, I understand those questions. That’s great. Those people should support H. R. 40, though, because that’s what H. R. 40 does. It tries to get that figured out, and get that math figured out, and figure out the best way to do it. But if we don’t actually have a study, we can’t actually answer those questions. You can’t ask a doctor to make a diagnosis before there’s an actual examination.”

Ta-Nehisi Coates (1975) writer, journalist, and educator

Ta-Nehisi Coates: Reparations Are Not Just About Slavery But Also Centuries of Theft & Racial Terror, Democracy Now (20 June 2019)

“Measurements which may be made on the surface of the earth… is an example of a 2-dimensional congruence space of positive curvature K = \frac{1}{R^2}… [C]onsider… a "small circle" of radius r (measured on the surface!)… its perimeter L and area A… are clearly less than the corresponding measures 2\pi r and \pi r^2… in the Euclidean plane. …for sufficiently small r (i. e., small compared with R) these quantities on the sphere are given by 1):L = 2 \pi r (1 - \frac{Kr^2}{6} + …),
A = \pi r^2”

Howard P. Robertson (1903–1961) American mathematician and physicist

1 - \frac{Kr^2}{12} + …
Geometry as a Branch of Physics (1949)

“By the painful light of the factory’s huge electric lamps
I write in a fever.
I write gnashing my teeth, rabid for the beauty of all this,
For this beauty completely unknown to the ancients.

O wheels, O gears, eternal r-r-r-r-r-r-r!
Bridled convulsiveness of raging mechanisms!
Raging in me and outside me,
Through all my dissected nerves,
Through all the papillae of everything I feel with!
My lips are parched, O great modern noises,
From hearing you at too close a range,
And my head burns with the desire to proclaim you
In an explosive song telling my every sensation,
An explosiveness contemporaneous with you, O machines!”

Fernando Pessoa (1888–1935) Portuguese poet, writer, literary critic, translator, publisher and philosopher

<p>À dolorosa luz das grandes lâmpadas eléctricas da fábrica
Tenho febre e escrevo.
Escrevo rangendo os dentes, fera para a beleza disto,
Para a beleza disto totalmente desconhecida dos antigos.</p><p>Ó rodas, ó engrenagens, r-r-r-r-r-r-r eterno!
Forte espasmo retido dos maquinismos em fúria!
Em fúria fora e dentro de mim,
Por todos os meus nervos dissecados fora,
Por todas as papilas fora de tudo com que eu sinto!
Tenho os lábios secos, ó grandes ruídos modernos,
De vos ouvir demasiadamente de perto,
E arde-me a cabeça de vos querer cantar com um excesso
De expressão de todas as minhas sensações,
Com um excesso contemporâneo de vós, ó máquinas!</p>
Álvaro de Campos (heteronym), Ode Triunfal ["Triumphal Ode"] (1914), in A Little Larger Than the Entire Universe, trans. Richard Zenith (Penguin, 2006)