he phantasms--that is to say, were
there one phantasm of a stone in me, and another in you--if the
phantasm itself, as it is one thing in me and another in you, were a
form of the possible intellect; since the same agent according to
divers forms produces divers actions; as, according to divers forms of
things with regard to the same eye, there are divers visions. But the
phantasm itself is not a form of the possible intellect; it is the
intelligible species abstracted from the phantasm that is a form. Now
in one intellect, from different phantasms of the same species, only
one intelligible species is abstracted; as appears in one man, in whom
there may be different phantasms of a stone; yet from all of them only
one intelligible species of a stone is abstracted; by which the
intellect of that one man, by one operation, understands the nature of
a stone, notwithstanding the diversity of phantasms. Therefore, if
there were one intellect for all men, the diversity of phantasms which
are in this one and that one would not cause a diversity of
intellectual operation in this man and that man. It follows,
therefore, that it is altogether impossible and unreasonable to
maintain that there exists one intellect for all men.

Reply Obj. 1: Although the intellectual soul, like an angel, has no
matter from which it is produced, yet it is the form of a certain
matter; in which it is unlike an angel. Therefore, according to the
division of matter, there are many souls of one species; while it is
quite impossible for many angels to be of one species.

Reply Obj. 2: Everything has unity in the same way that it has being;
consequently we must judge of the multiplicity of a thing as we judge
of its being. Now it is clear that the intellectual soul, by virtue
of its very being, is united to the body as its form; yet, after the
dissolution of the body, the intellectual soul retains its own being.
In like manner the multiplicity of souls is in proportion to the
multiplicity of the bodies; yet, after the dissolution of the bodies,
the souls retain their multiplied being.

Reply Obj. 3: Individuality of the intelligent being, or of the
species whereby it understands, does not exclude the understanding
of universals; otherwise, since separate intellects are subsistent
substances, and consequently individual, they could not understand
universals. But the materiality of the knower, and of the species
whereby it knows, impedes the knowledge of