f form really followed functionit did in a material sense by means of this ideal of plasticity, the spiritual concept of form and function as onewhy not throw away the implications of post or upright and beam or horizontal entirely? Have no beams or columns piling up as joinery. Nor any cornices. Nor any features as fixtures. No. Have no appliances of any kind at all, such as pilasters, entablatures and cornices. Nor put into the building any fixtures whatsoever as fixtures. Eliminate the separations and separate joints. Classic architecture was all fixation-of-the-fixture. Yes, entirely so. Now why not let walls, ceilings, floors become seen as component parts of each other, their surfaces flowing into each other. To get continuity in the whole, eliminating all constructed features just as Louis Sullivan had eliminated background in his ornament in favor of an integral sense of the whole. Here the promotion of an idea from the material to the spiritual plane began to have consequences. Conceive now that an entire building might grow up out of conditions as a plant grows up out of soil and yet be free to be itself, to live its own life according to Mans Nature. Dignified as a tree in the midst of nature but a child of the spirit of man.
I now propose an ideal for the architecture of the machine age, for the ideal American building. Let it grow up in that image. The tree.
© Frank Lloyd Wright Foundation