"For the dead had looked upon the long absence of their spirits from their bodies as a bondage."
It is interesting to me that numerous philosophers (Plato comes to mind) have thought of the spirit as imprisoned in the body, when in fact the opposite is true. Our physical selves are so valuable, so integral to our beings as to be eternally indispensible.
A story I now tell myself: when God created our spirits, he did so in a way that left them open to intertwine with bodies, made tendrils of spiritual nerves waiting for the home they would ultimately be anchored in. As such our spirits, from the beginning, have hungered for bodies to feel whole and complete: for this reason do the devils seek to possess and dwell in mortal bodies, even for a short time.
Perhaps raw Intelligence likewise craves spirit, and for this reason were we so eager to be spiritually born.