"Anaximander displays all the symptoms of the intellectual fever spreading through Greece. His universe is no longer a closed box, but infinite in extension and duration. The raw material is none of the familiar forms of matter but a substance without definite properties except for being indestructible and everlasting. Out of this stuff all things are developed, and into it they return... infinite multitudes of other universes have already existed, and been dissolved again into the amorphous mass. The earth is a cylindrical column, surrounded by air; it floats upright... without support or anything to stand on, yet it does not fall because, being in the centre, it has no preferred direction... if it did, this would disturb the symmetry and balance of the whole. The spherical heavens enclose the atmosphere "like the bark of a tree", and there are several layers... to accommodate the various stellar objects. ...The sun is merely a hole... the moon... it phases... due to recurrent partial stoppages of the puncture, and so are the eclipses. The stars are pin-holes in a dark fabric through which we glimpse the cosmic fire filling the space between two layers of "bark". ...it is the first approach to a mechanical model of the universe. ...yet the machinery looks like it had been dreamed up by a surrealist painter... closer to Picasso than to Newton."