We speak of concrete and not abstract painting because nothing is more concrete, more real then a line, a colour, a surface. A woman, a tree, a cow; … - Theo van Doesburg

We speak of concrete and not abstract painting because nothing is more concrete, more real than a line, a colour, a surface. [quote of Van Doesburg, c. 1925]

Gradually we began [ De Stijl-artists in The Netherlands, 1918] to present a closed front. By working there had been created not only a clarity in the collective consciousness of our group, but we had gained a certainty, which made it possible for us to define our collective attitude towards life and to perpetrate it according to the requirements of the period.. .As the world war [ World War I ] was coming to an end, we all came to feel the need of securing an interest in our efforts beyond the narrow boundaries of Holland.

Dada is able to mobilize the optical and dimensional static viewpoint which keeps us imprisoned in our [three-dimensional] illusions. Thus it became possible to perceive the entire prism of the world instead of just one facet at a time. In this connection Dada is one of the strongest manifestations of the fourth dimension, transposed onto the subject.. ..Dada is 'yes-no', a bird on four legs, a ladder without steps, a square without angels. Dada possesses as many positives as negatives. To think that Dada simply means destruction is to misunderstand life, of which Dada is the expression.

[ Futurism's] ..superficial expression of velocity, the aeroplane, the racing-car and so on, is but a weak expression of the inner velocity of thought compared to which the velocity of radium represents nothing but inertia.. .The mimetic expression of velocity (whatever its form may be: the aeroplane, the automobile, and so on) is diametrically opposed to the character of painting, the supreme origin of which is to be found in inner life.