Date: 1389

"The innere witte is departed a þre by þre regiouns of þe brayn, for in þe brayne beþ þre smale celles."

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

Date: 1390

"Minerve for the hed thei soghten, / For sche was wys, and of a man / The wit and reson which he can / Is in the celles of the brayn, / Wherof thei made hire soverain."

— Gower, John (c. 1330-1408)

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: Trans. 1425

"þe brayn..is þe place & þe habitacioun of þe resonable soule, as G[alen] hym selfe seid."

— Guy de Chauliac (c.1300-1368)

Date: Trans. 1425

"Haue alle þe ylke cifers togedur in þi mynde, a-rowe ychon aftur other."

— Johannes de Sacrobosco or Sacro Bosco; John of Holywood (c. 1195 - c. 1256)

Date: w. c. 1425-1440

"Then wolle the chambir of my thought trewly / Of plesaunce take a light in eche parté / Such ioy wolle him aray so fresshe and hy / That waken must myn heuy hert slepé / Out of his fowle and sluggissh slogardé."

— Charles [d'Orléans], duke of Orléans (1394-1465)

Date: 1445

"Eche of þese [v inward bodili wittis: commune witt, ymaginacioun, ffantasie, estimacioun, mind] han to hem her propre chaumbres in þe brayn..as philosophris seyn."

— Pecock, Reginald (c.1395-1460)

Date: 1464

"The mind, to be sure, is like an intellectual book, which sees in itself, and for all, the intention of the author."

— Nicholas of Cusa (1401-1464)

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)