Date: c. 1603

"But do you suppose, when all the approaches and entrances to men's minds are beset and blocked by the most obscure idols -- idols deeply implanted and, as it were, burned in -- that any clean and polished surface remains in the mirror of the mind on which the genuine natural light of things can ...

— Bacon, Sir Francis, Lord Verulam (1561-1626)

Date: 1690, 1694, 1695, 1700, 1706

Internal and external sensation, "These alone, as far as I can discover, are the windows by which light is let into this dark room: For methinks the understanding is not much unlike a closet wholly shut from light, with only some little openings left, to let in external visible resemblances, or i...

— Locke, John (1632-1704)

Date: 1701, 1704

"The application of our Thoughts to other Subjects is like looking upon the Rays of the Sun as it shines to us from a Wall, or upon the Image of it as it returns from a Watry Mirrour, but this is looking up directly against the Fons veri lucidus, the bright Source of Intellectual Light a...

— Norris, John (1657-1712)

Date: 1734

"The question is, how this Familiarity arises? and how the Cabinet comes to be sensible of any thing that's put into it? A Scritore knows nothing of the Papers which the careful Banker locks up in it? Or a Glass, tho' it may be said to receive the Image of a Beau, and he really sees somewhat of h...

— Forbes of Pitsligo, Alexander Forbes, Lord (1678-1762)