What's a spirit?

[Ens Entium]

I don't think Ra ever defined what a spirit is in a mind/body/spirit complex. Is it consciousness itself? Where does the mind end and the spirit begin? What can it do? If someone is overwhelmed with joy or overwhelmed with depression is that a mental or spiritual experience?

I know what you're saying. as far as i can tell there've been descriptions of functions and powers. I'll attempt one.

If we look at the material world around us, it's a mind/body complex. What constructs, animates and governs that is the Logos. The logos is the active principle, it is the fisrt thing behaves as cause with respect to the manifested creation. It's a focus of intelligent infinity; contacting, feeding back to II and using II. This corresponds to our spirit complex. Also, the (free) will rests with the spirit in the same way the Logos inherits free will.

I think it's helpful to define the spirit (or life entity) as "cause". And so it takes on a variable definiton based on the effects it can cause, and in terms of the environment of effects and circumstances it 'inhabits'. But that which captures, albeit in a stepped down fashion, the principle that the Logos is the essence of.