Reblogged from dragonlibrarian
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The 4 elements (Earth, Water, Air, Fire) correspond to the 4 states of matter (Solid, Liquid, Gas, Plasma.)
this is news to people???
This is also why “quintessence” used to be considered the fifth element. It was a catch-all term for the matter things in space were made of, since back then we didn’t know what it was.