opposite condition to the intellective faculty, which is abstract from all matter; it cannot be by the said faculty understood, unless it be made proportionate thereunto, viz. abstra∣cted and immaterial: now this cannot be done save by an abstract Virtue, and an Intelligent nature.
From whence it is apparent, that it is the Office of the active understanding to act,
that is to draw from power to act, and of things potentially intelligible to make things actual∣ly intelligible. This Office of the understanding Aristotle expresses by the analogy it bears to Art, Nature, Habit, Light. For it is as it were the eye and sight of the mind, and it is to the Phantasms, as light to colours. For it illustrates the Phantasms, being inveloped with material conditions, which like darkness do hinder their being understood, so as they may put on the nature of things intelligible, and may be diffused to the passive understan∣ding: even as Colours by means of Light do send forth a Picture of themselves unto the sight: yet this illustration of the Phantasms is not performed formally, so that any quality is imprinted upon them; nor objectively only, but effectively; because the Agent under∣standing like external light by imparting its Ray yet doth actively elevate the Phantasms, to the production of an Intelligible species; nor is the Agent Understanding requisite only in respect of the object, but it hath also another office, viz. in reference to the passive understan∣ding, that it may produce therein the act of understanding, representing thereto an object in a species intelligible, which it performes when together with the illustrated Phantasm it produces a species of the thing to be understood, into the passive understanding.
Whence we may collect, upon what and how the Agent understanding doth act.
For it is requisite in respect of both action, v••z. that it may act upon the Phantasms, and upon the passive understanding. But it acts upon these in a different manner; for it is joyned to the Phancasms before Intellection, and indeed while they are yet in the Fancy, where illu∣strating them it becomes their form, whereby they are made a moving object of the passive understanding: afterwards, the adjoyned Phantasms being illuminated, it acts upon the passive understanding, by producing therein an intelligible species or representation, and by consequent the act it self of understanding: But the Agent understanding it self as it is an Agent doth not understand; since it doth not receive the intelligible speces or notions, though it produce them, nor is in aptitude to understand; but the act of understanding is in the Passive Intellect, as in its subject. This therefore is called formally the Intellect; the other only effectively, because it makes the understanding or Intellection.
The Passive understanding is as it were the subject and matter,
whereon the intelligible spe∣cies are imprinted; and therefore 'tis called Patient and Passive, because it suffers by recei∣ving the species, through means of the Phantasms. It is also called Intellectus possibilis, the possible understanding, and the mind in power; because it may be made all things, though it is actually none of them.
And here in the first place we must remember that the passive understanding is indeed in respect of the object a passive power; seeing it acts upon no other thing: but compared with the Intellection it is a power, both active, inasmuch as it works Intellection; and also passive, inasmuch as it receives the said Intellection. For an immanent action must be re∣ceived in the same power by which it is produced.
Moreover we must observe how that it is to be understood that the understanding when it understands, is made all things, which in the most elegant words of Scaliger, Exercit. 307. sect. 6. thus we explain. In the first place (quoth he) I deny that the Philosopher saith, that our understanding is all things essentially or formally as they use to say. But it is all things, subjectively, even as the first matter is, which is not made the Essence of an Horse under the form of an Horse: but it remains that which it was, a certain substance, of which and the form this thing is made. But the information of the understanding is af∣ter another manner: for it is not a meer possibility, as the first matter, which may be redu∣ced to be actually this or that by the form. But it is our form substantial, separable, incor∣ruptible, eternal; of which as a subject essentially perfect, and the species which it receives, is made the formed intellect, not another from it self; save as Caesar being learned differs from himself unlearned, by reception of accidental species. It is not therefore made the un∣derstanding simply, nor is it made the species it self, but under the species. So far Sca∣liger.
And so much shal suffice to have said of the first difference of the understanding:
where this again is to be observed: that the Agent and passive understanding are not really and es∣sentially distinguished, but only respectively; since two internal forms are not knit together by new accidents, and to the receiving and effecting of an immanent action (such as under∣standing