It is not present as Form is in Matter; for the Form as in Matter is inseparable and, further, is something superimposed upon an already existent thing; soul, on the contrary, is that which engenders the Form residing within the Matter and therefore is not the Form. If the reference is not to the Form actually present, but to Form as a thing existing apart from all formed objects, it is hard to see how such an entity has found its way into body, and at any rate this makes the soul separable.
How comes it then that everyone speaks of soul as being in body?
Because the soul is not seen and the body is: we perceive the body, and by its movement and sensation we understand that it is ensouled, and we say that it possesses a soul; to speak of residence is a natural sequence. If the soul were visible, an object of the senses, radiating throughout the entire life, if it were manifest in full force to the very outermost surface, we would no longer speak of soul as in body; we would say the minor was within the major, the contained within the container, the fleeting within the perdurable.