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)

Date: w. 1740, 1748

"Thirsting for Knowledge, but to know the right, / Thro' judgment's optick guide th' illusive sight, / To let in rays on Reason's darkling cell, / And Prejudice's lagging mists dispel."

— Walpole, Horatio [Horace], fourth earl of Orford (1717-1797)