What is Avicenna's theory of the soul?
The human soul, or 'nafs,' is an immaterial substance, an intelligible form that receives its perfection through the intellect. It is not reducible to the body but is an active intellect that can apprehend universal truths. My theory posits a hierarchy of souls, from the vegetative to the rational, with the rational soul capable of abstract thought and direct apprehension of the intelligibles. This intellect acts as an intermediary between the material world and higher, divine realities.