Aetheris Pyrism/Theology/Psychosophy

Flamma

The basic concept of the flamma can be found here.

Soul Dualism

The flamma is made of two principles, each of which autonomous spirit beings in their own right.

The favilla could be translated as the personality, the 'self'. A man can live temporarily lose its favilla, such in certain cases of unconsciousness and trance-like states, in where the favilla leaves the body for various reasons. It is thought that the deeper one sleeps, the less attached its favilla is to the body. Evil spirits can take advantage of that to replace a man's favilla with its own, creating what are known as spirit-possessions.

The subo can be roughly translated as the life, breath, warmth or stamina. It's the raw principle of material life, without which a body cannot survive.

It is debated where an Undead has lost their favilla and/or their subo, or if they have had them simply corrupted.