Every soul is the size of the entire known universe, containing every known thing within it, endures for all time from the earliest known pre-history to the most distant imaginable future, and encompasses every conceivable possibility. Therefore, no two souls are alike. 

Souls vary in size, density, variety and complexity. Souls overlap in reality, but weave through realities differently, touching, entangling, moving and being moved by different beings. 

Some souls have space in them for your soul, and are happy to extend you hospitality. Some souls seek your hospitality. Other souls need your soul locked up inside your silent body.