The world and lore of Redsky was built entirely around six philosophical archetypes: the six Elements. There are three Chaotic Elements (Fire, Air, and Void) and three Ordered Elements (Water, Earth, and Aether).
They form three dichotomies / spectra:
The Emotional dichotomy (Fire-Water)
The Intellectual dichotomy (Air-Earth)
The Social dichotomy (Void-Aether)
If you want a really deep dive, you can learn more about the elements here: https://www.solar-studios.com/post/the-elements-in-depth