We believe that the elements in the chemical formula of our creative work, problem, invention, and art, correspond to the challenges of our age. - El Lissitzky

One of our [his] utopian ideas is the desire to overcome the limitations of the substructure, of the earthbound. We have developed this idea in a series of proposals (sky-hooks, [like Lissitzky's paper-architecture design 'Wolkenbügel' (1924)] stadium grandstands, Paris garage].. .It is the task of technology to make sure that all these elementary volumes that produce new relationships and tensions in space will be structurally safe.. .The idea of the conquest of the substructure, the earthbound, can be extended even further and calls for the conquest of gravity as such. It demands floating structures, a physical-dynamic architecture.

We analyzed the first stage of our construction, confined to two-dimensional space, and found it to be as durable and resistant as the earth itself. We build in this space just as we would on the ground, and therefore must take as our point of departure the concepts of gravity and force of attraction, as the foundation of everything built on the land. In PROUN the reciprocity of the effects of gravity [Newton, 'for every action an equal and opposite reaction'] manifests itself in a new capacity. We see that on the surface (plane) of the picture, the PROUN ceases to exist as such and becomes a building surveyed from every direction — considered from above or examined from below. The result of this turns out to be the destruction of the single axis that leads to the horizon.

Cubism demonstrated in its constructions its modernity in relation to scale, but in painting and contre-relief we have in front of us an absolute scale which is this - forms in their natural size in the ratio 1 : 1. If however we wish to transform the contre-relief into an architectural structure and therefore enlarge it by one hundred times, then the scale ceases to be absolute and becomes relative in the ratio of 1 : 100. Then we get the American statue of liberty in whose head there is room for four men and from whose hand the light streams out.