It is impossible for the soul to become similar to sense-objects (in order to grasp them), by remaining pure. How indeed could a point become similar to a line? The intelligible line itself could not become conformed to the sense-line, any more than intelligible fire to the sense-fire, or the intelligible man to the sense-man. Nature herself which begets man could not be identical with the begotten man. The isolated soul, even if she could grasp sense-objects, will finish by applying herself to the intuition of intelligible objects, because, having nothing by which to grasp the former, she will let them escape. Indeed, when the soul perceives from far a visible object, although only the form reaches her, nevertheless what first began by being for her indivisible, finally constitutes a subject, whether it be color or a figure, whose size is determined by the soul. [Ennead IV,4 (28) 23]
If fire also be a reason engaged in matter, and in this respect resemble the earth, it was not born by chance. Whence would it come? Lucretius thought it came from rubbing (sticks or stones). But fire existed in the universe before one body rubbed another; bodies already possess fire when they rub up against one another; for it must not be believed that matter possesses fire potentially, so that it is capable of producing it spontaneously. But what is fire, since the principle which produces the fire, giving it a form, must be a “reason”? It is a soul capable of producing the fire, that is, a “reason” and a life, which (fuse) into one thing. That is why Plato says that in every object there is a soul; that is, a power capable of producing the sense-fire. Thus the principle which produces the fire in our world is a “fiery life,” a fire that is more real than ours. Since then the intelligible Fire is a fire more real than ours, it also possesses a moral life. The Fire-in-itself therefore possesses life. There is a similar “reason” in the other elements, air and water. Why should not these things be as animated as earth is? They are evidently contained in the universal living Organism, and they constitute parts thereof. Doubtless life is not manifest in them, any more than in the earth; but it can be recognized in them, as it is recognized in the earth, by its productions; for living beings are born in the fire, and still more in the water, as is better known; others also are formed in the air. The flames that we daily see lit and extinguished do not manifest in the universal Soul (because of the shortness of their duration); her presence is not revealed in the fire, because she does not here below succeed in reaching a mass of sufficient permanency. [Ennead VI,7 (38) 11]