You asked some time ago about Sigfried Giedion. He comes to mind now because of his conscious exploitation of “Space-Time” metaphors in architectural history. It is astonishing how helpful and how crippling a big unconscious metaphor can be in directing the thoughts of whole periods of history. I mean such things as "organism" in Rousseau. Yet how different a concept of organism from that of the sixteenth century when it was hierarchical, or of the 19th when it was animal. I sometimes feel that such a notion of organism got into the surging rhythm of [Tolstoy's] "War and Peace" in such a way as to create the psychological reality of cinema before the mechanical fact. Curiously, the Greeks invented "organic" as a metaphor from "mechanic". Your work shows a constant awareness of the nearness of these supposed opposites, I am fully aware.