Date: 1700

"For (says he) Man can no more be a Light to his Mind than he is to his Body: And thence infers, that as the Eye has no Light in it self, so neither the Understanding."

— Leslie, Charles (1650-1722)

Date: 1700

" I will not take advantage of the Philosophy of this; for, I suppose his meaning to be, that it is Natural to the Understanding to Receive a Light that is infused into it, as for the Eye to see by an Extraneous light; that is, it is an Organ fitted to Receive Light, tho' it has none in it self; ...

— Leslie, Charles (1650-1722)

Date: 1714

"But when a monad has organs that are adjusted in such a way that, through them, there is contrast and distinction among the impressions they receive, and consequently contrast and distinction in the perceptions that represent them [in the monads] (as, for example, when the rays of light are conc...

— Leibniz, Gottfried Wilhelm (1646-1716)

Date: 1730

"What dreadful havoc in the human breast / The passions make, when unconfin'd, and mad, / They burst, unguided by the mental eye, / The light of reason; which in various ways / Points them to good, or turns them back from ill."

— Thomson, James (1700-1748)

Date: 1744, 1772, 1795

"But beyond / This energy of truth, whose dictates bind / Assenting reason, the benignant sire, / To deck the honour'd paths of just and good, / Has added bright imagination's rays."

— Akenside, Mark (1720-1771)

Date: Saturday, April 14, 1750

"[W]e are easily shocked by crimes which appear at once in their full magnitude; but the gradual growth of our own wickedness, endeared by interest, and palliated by all the artifices of self-deceit, gives us time to form distinctions in our own favour, and reason by degrees submits to absurdity,...

— Johnson, Samuel (1709-1784)

Date: 1751

"Virtue, placed at such a distance, is like a fixed star, which, though to the eye of reason, it may appear as luminous as the sun in his meridian, is so infinitely removed, as to affect the senses, neither with light nor heat."

— Hume, David (1711-1776)

Date: 1765

"Let those, whose arts to fatal paths betray, / The soul with passion's gloom tempestuous blind, / And snatch from Reason's ken th'auspicious ray / Truth darts from Heaven to guide th'exploring mind."

— Beattie, James (1735-1803)

Date: 1782

One may have a mind "Not yet so blank, or fashionably blind, / But now and then perhaps a feeble ray /Of distant wisdom shoots across his way"

— Cowper, William (1731-1800)

Date: 1788-89

"At first, indeed, before she is excited by science, she is oppressed with lethargy, and clouded with oblivion; but in proportion as learning and enquiry stimulate her dormant powers, she wakens from the dreams of ignorance, and opens her eye to the irradiations of wisdom"

— Taylor, Thomas (1758-1835)