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: 1386-1400

"That oon of hem was blynd and myghte not see, / But it were with thilke eyen of his mynde / With whiche men seen, after that they ben blynde."

— Chaucer, Geoffrey (c. 1340-1400)

Date: 1389

"The soule ... muste suffre for the bonde of the body that he is joyned to."

— Trevisa, John (b. c. 1342, d. in or before 1402); Bartholomeus (1203-1272)

Date: c. 1420

"Thou woost wel, who shal an hous edifie / Gooth nat ther-to withoute avisament / If he be wys, for with his mental ye / First is it seen, purposid, cast & ment, / How it shal wroght been, elles al is shent."

— Hoccleve [Occleve], Thomas (c.1367-1426)

Date: c. 1440-1450

"Vnderstondying is þe sy3t in þe ey3e of soule, desire is þe ere & þe herying of the soule, dely3t is þe mowth & þe swelwying of þi soule, Mynde is þe nase & þe smellyng of þi soule; wyll & consent is þe felyng of þi soule."

— Anonymous

Date: 1464

"For Simple Being, which is visible to the mind alone, is to the mind as the being of color is to the sense of sight."

— Nicholas of Cusa (1401-1464)

Date: 1464

" [I]f someone were to turn his mind's sight to the possibility, or power, of oneness: he surely would see in every number and in all plurality only oneness's power"

— Nicholas of Cusa (1401-1464)

Date: 1464

"Therefore, my dearly beloved Peter, with keen directedness turn your mind's eye to this secret, and with this analysis enter into my writings and into whatever other writings you read, and occupy yourself especially with my books and sermons."

— Nicholas of Cusa (1401-1464)