In ancient Egypt what did the Ba and the Ka represent?
kais like the spirit; its the element that makes something alive. In contrast, the
bais more like the personality of a person.
The Ka was the life force, astral double or spiritual twin ... the Ba was the impersonal life force of the soul, the essence of one's individuality and unique characteristics.
- Ruiz, Ana. The spirit of ancient Egypt. Algora Publishing, 2001.
There were in fact five parts to the Egyptian view of the soul, not just two.