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)

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)

Date: 1273

"On the contrary, From its nature the memory is the treasury or storehouse of species."

— St. Thomas Aquinas (1225-1274)

Date: 1273

"For eternity is compared to time as immovable to movable. And thus Boethius compared the intellect to eternity, and reason to time."

— St. Thomas Aquinas (1225-1274)

Date: 1273

"For "opinion" signifies an act of the intellect which leans to one side of a contradiction, whilst in fear of the other."

— St. Thomas Aquinas (1225-1274)

Date: 1273

"While to 'judge' or 'measure' [mensurare] is an act of the intellect, applying certain principles to examine propositions. From this is taken the word 'mens' [mind]."

— St. Thomas Aquinas (1225-1274)

Date: 1273

"But since habit is a principle of act, sometimes the name conscience is given to the first natural habit--namely, 'synderesis': thus Jerome calls 'synderesis' conscience (Gloss. Ezech. 1:6); Basil, the 'natural power of judgment,' and Damascene says that it is the 'law of our intellect.'"

— St. Thomas Aquinas (1225-1274)

Date: 1273

"The body is ruled by the soul, and the irascible and concupiscible powers by the reason, but in different ways."

— St. Thomas Aquinas (1225-1274)