three principles of modern architecture
The first was a discussion of the expression of volume rather than mass in architecture. Now a building could be conceived of as a structural skeleton wrapped in curtain walls or windows that allowed for more unencumbered and flexible interior space. The second principle sought to define an aesthetic of regularity and balance rather than the more rigid symmetry favored by classical architects. The third principle included the rejection of any form of historical articulation or applied ornamentation, which they considered as merely arbitrary and unnecessary rather than degenerate. Instead, the materials themselves would be held up as intrinsically beautiful, and their carefully balanced arrangement would produce an aesthetic harmony of parts. (Palmer, 2008)