Arthur Koestler, The Sleepwalkers: A History of Man's Changing Vision of the Universe (1959, 1963)
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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.

— Arthur Koestler

What It Means

This is a placeholder explanation generated by the low-overhead model. It interprets "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." in the context of "Arthur Koestler, The Sleepwalkers: A History of Man's Changing Vision of the Universe (1959, 1963)" to mean that wisdom is timeless.

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Source: Wikiquote: "Anaximander" (Quotes about Anaximander) The 'What it means' explanation text was generated by Google Gemini Flash (accessed January 18, 2026). https://gemini.google.com/app
Anaximander

About Anaximander

Anaximander (Greek: Ἀναξίμανδρος, Anaximandros; c. 610 – c. 546 BC) was a pre-Socratic Greek philosopher who lived in Miletus, a city of Ionia; Milet in modern Turkey. He belonged to the Milesian school and learned the teachings of his master Thales, succeeding him to become the second master of that school where he counted Anaximenes and arguably, Pythagoras amongst his pupils.