Essences

The three essences are Light, Shadows and Sound.

Many cultures in the universe see positive and negative, Light and Shadows. However, on Dirt, it is believed that a neutral force exists between the two (whether as a result of, or as a requirement for, their interaction is debated). The culture of Dirt also believes that one of the most important traits of Light is that it, almost uniquely, has two opposites. Thus, by nature, the essences are unique in their three-fold nature:

Light has two opposites in Shade and Sound. Shade and Sound, themselves, are "opposites' of one another, not because they are "polar," but because they are so vastly different in concept. The essences are the Aspects of Reality required for the stability of the Astral and Aetheral Layers.