earth = solid
water = liquid
air = gas
fire = plasma
Usually the elements of antiquity are dismissed offhand because they are compared to today’s periodic table. However, they are excellent basic prototypes for us of the four states of matter.
Aether would be more difficult to map out, but might it work as something like energy, spacetime, or strings?
An interesting sidenote: On the surface of the Earth, plasma is rarest while liquid is commonest. On a larger scale, it is the opposite.
The link between elements and phases is interesting, but only in the way that a cloud shaped like a train is interesting.
It breaks down if you try to do anything further with it - phases simply do not combine or interact like the ancient elements were believed to.
For example, steam is classically said to be a mixture of fire and water. The idea was that you could take the fire out of the steam and get back to pure water. But steam isn’t a combination of plasma and liquid that can revert to plasma and liquid. Steam is a plain old gas (which means the ancients should have said that fire + water = air, but they didn’t).
The ancients weren’t stupid, just uninformed. The classical elements map to the states of matter (more or less) because it was the states of matter that inspired the classical element paradigm. The OP appears to find it amazing that the ancient Greeks recognized that matter occurred in different states.
My main amazement is in how the ancient elements are routinely compared with the periodic table, and therefore judged to be totally juvenile and misinformed, while a better mapping exists with the states of matter.
There’s a lot more than that. There are something like a dozen different phases of water ice alone (all solid, but with different crystalline structures).
Worse, Piers Anthony made the same connection in his… Tarot series? or the related Kirlian series? One of those, anyway. So not exactly an original insight.
Both. They’re the same universe, but the Tarot series is much earlier. The Kirlian series references the Tarot and Brother Whatever from the Tarot series.