 Proun was essentially Lissitzky 's exploration of the visual language of suprematism with spatial elements , utilizing shifting axes and multiple perspectives ; both uncommon ideas in suprematism . <unk> at the time was conducted almost exclusively in flat , 2D forms and shapes , and Lissitzky , with a taste for architecture and other 3D concepts , tried to expand suprematism beyond this . His Proun works ( known as Pro @-@ oon ) spanned over a half a decade and evolved from straightforward paintings and lithographs into fully three @-@ dimensional installations . They would also lay the foundation for his later experiments in architecture and exhibition design . While the paintings were artistic in their own right , their use as a staging ground for his early architectonic ideas was significant . In these works , the basic elements of architecture – volume , mass , color , space and rhythm – were subjected to a fresh formulation in relation to the new suprematist ideals . Through his <unk> , utopian models for a new and better world were developed . This approach , in which the artist creates art with socially defined purpose , could aptly be summarized with his edict " das <unk> Schaffen " – " task oriented creation . " 
