Thales of Miletus · Philosophy
Thales held that the magnet has a soul because it moves iron, and that ‘all things are full of gods.’ His doctrine of a living, self-moving cosmos - hylozoism - shows that the first naturalism was not a dead mechanism but an enchanted, animate world.
We have seen Thales as the first naturalist - the man who explained nature by nature rather than by the gods. But it would be a deep mistake to picture his cosmos as the cold, dead, mechanical universe of later physics, a heap of inert matter pushed around by external forces. Thales’ underlying stuff - water - was itself alive: self-moving, generative, the source of all growth and change. His most famous metaphysical sayings point the same way: that the magnet has a soul because it moves iron, and that ‘all things are full of gods.’ For Thales, to be is, in some measure, to be alive.
This doctrine is called hylozoism, from the Greek hyle (matter) and zoe (life): the view that matter as such is animate, that life and motion are not added to dead stuff from outside but belong to the nature of stuff itself. It is the natural first answer to a question Thales’ naturalism could not avoid: if the gods are no longer the cause of motion and change, then what is? Where does motion come from, in a world explained by nature? Thales’ answer is that nature is self-moving, because the fundamental stuff is alive. The cosmos does not need an outside pusher because it is, through and through, a living thing. This is naturalism - but an enchanted naturalism, a world humming with soul and divinity, not a clockwork run down.
Behind the charming magnet example lies one of the deepest problems in all of philosophy and physics: the problem of the source of motion. The world is full of movement and change - but what gets it going? What is the original cause that makes things move? For the early Greeks, the answer was tied to the concept of soul (psyche), which they understood not first as a mind or a ghost but as the principle of life and self-movement - that which makes a living thing move itself, in contrast to a corpse, which cannot. To have soul was to be a self-mover; to lack it was to be inert.
Thales’ hylozoism takes this concept and makes it cosmic. If the underlying stuff of the world is alive - if water is ensouled - then the world needs no external mover to explain its motion; it moves itself, from within, because it is alive. This is a remarkably elegant solution to the source-of-motion problem, and it would echo through Greek philosophy for centuries. Aristotle would later argue that an infinite chain of moved movers is impossible, and that there must be a first unmoved mover - a source of all motion that is itself unmoving - refining Thales’ intuition that motion must ultimately trace back to a special principle. Whether one locates the source of motion in living matter (Thales), in cosmic Mind (Anaxagoras), or in an unmoved mover (Aristotle), the question is the same, and Thales asked it first: in a world explained by nature, what is the natural origin of all change?
Thales’ hylozoism reveals that ‘naturalism’ - explaining the world by nature - does not by itself decide whether nature is alive or dead, enchanted or mechanical. These are two very different visions, and the history of thought has oscillated between them. The living cosmos of Thales sees nature as animate, self-moving, suffused with soul and divinity; nature explains itself because nature is itself a kind of life. The mechanical cosmos that triumphed in the seventeenth century sees nature as dead matter in motion, governed by impersonal mathematical laws; nature explains itself because every event is the lawful effect of prior physical causes.
Both are forms of naturalism - both explain nature by nature rather than by external divine will - yet they could hardly be more different in spirit. And the question Thales’ living cosmos poses has never gone away: if the universe is fundamentally dead matter, how did life and mind arise from it, and how do they fit? Thales never had to face this problem, because for him matter was alive from the start. The mechanical worldview gained immense predictive power but inherited a deep puzzle - the place of life and consciousness in a dead universe - that some contemporary thinkers try to solve by reviving, in sophisticated form, something like Thales’ intuition that mind or experience goes ‘all the way down.’ To study Thales’ hylozoism is to recover the road not taken - the vision of an animate cosmos that modern science set aside, and whose abandonment created some of philosophy’s hardest and most enduring problems.
This is the opening of the lesson. The rest — the dialogue, the primary source, and the recall — is in the app.
You learned that Thales held the magnet to have a soul because it moves iron, and that ‘all things are full of gods’ - the doctrine of hylozoism, that matter is itself alive and self-moving. Explain why this means the first naturalism conceived a living cosmos, not a dead mechanism.
Leads to Aristotle.
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