Date: 1273

"It is separate indeed according to its intellectual power, because the intellectual power does not belong to a corporeal organ, as the power of seeing is the act of the eye; for understanding is an act which cannot be performed by a corporeal organ, like the act of seeing."

— St. Thomas Aquinas (1225-1274)

Date: 1273

"And (De Anima ii, 3) he [Aristotle] compares the various souls to the species of figures, one of which contains another; as a pentagon contains and exceeds a tetragon."

— St. Thomas Aquinas (1225-1274)

Date: 1273

"The artisan, for instance, for the form of the saw chooses iron adapted for cutting through hard material; but that the teeth of the saw may become blunt and rusted, follows by force of the matter itself. So the intellectual soul requires a body of equable complexion, which, however, is corrupti...

— St. Thomas Aquinas (1225-1274)

Date: 1273

"Therefore it seems to be united to the body by means of an incorruptible body, and such would be some heavenly light, which would harmonize the elements, and unite them together."

— St. Thomas Aquinas (1225-1274)

Date: 1273

"Others said it is united to the body by means of light, which, they say, is a body and of the nature of the fifth essence; so that the vegetative soul would be united to the body by means of the light of the sidereal heaven; the sensible soul, by means of the light of the crystal heaven; and the...

— St. Thomas Aquinas (1225-1274)

Date: 1273

"But the shape is united to the wax without a body intervening. Therefore also the soul is thus united to the body."

— St. Thomas Aquinas (1225-1274)

Date: 1273

"Further, the Philosopher says (De Anima. ii, 1) that the relation of a part of the soul to a part of the body, such as the sight to the pupil of the eye, is the same as the relation of the soul to the whole body of an animal."

— St. Thomas Aquinas (1225-1274)

Date: 1273

"But for the retention and preservation of these forms, the 'phantasy' or 'imagination' is appointed; which are the same, for phantasy or imagination is as it were a storehouse of forms received through the senses."

— St. Thomas Aquinas (1225-1274)

Date: 1273

"Furthermore, for the apprehension of intentions which are not received through the senses, the 'estimative' power is appointed: and for the preservation thereof, the 'memorative' power, which is a storehouse of such-like intentions."

— St. Thomas Aquinas (1225-1274)

Date: 1273

"And according to this the active intellect is required for understanding, in like manner and for the same reason as light is required for seeing."

— St. Thomas Aquinas (1225-1274)