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

"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)

Date: 1273

"Wherefore the human soul derives its intellectual light from Him, according to Ps. 4:7, 'The light of Thy countenance, O Lord, is signed upon us.'"

— St. Thomas Aquinas (1225-1274)

Date: 1273

"On the contrary, The Philosopher says (De Anima iii, 5) that the active intellect is as a light."

— St. Thomas Aquinas (1225-1274)