The Greeks and their successors regarded Nature (pliusis or physics) as an artefact. Having entelechized this massive product of their own literate technology, they never turned to the subsidiary technologies that were the extensions of man. However, they would have admitted at once, if asked, that any actuation of human potential generates an entelechy or pattern of energy that is new. It was not until Poe and Baudelaire that these patterns began to be studied. This was after industrialism had already abolished most of the Greek and Roman Natura. With the coming of electric technology whatever remained of Greek Nature was scrapped so that today we are back where they started with primitive Existence. They had reared the figure of Nature on the ground of Existence. They had done it by classification. The new ecology will use other means.