Date: 1744, 1772, 1795

"Thus he learns / Their birth and fortunes; how allied they haunt / The avenues of sense; what laws direct / Their union; and what various discords rise, / Or fix'd or casual: which when his clear thought / Retains and when his faithful words express, / That living image of the external scene, / ...

— Akenside, Mark (1720-1771)

Date: 1745

"A race fantastick, in whose page you see / Untutor'd fancy, a meer Jeu d'Esprit: / Wit's shatter'd mirror lies in fragments bright, / Reflects not nature, but confounds the sight."

— Brown, John (1715-1766)

Date: 1746, 1793

Happiness may "Dart thro' my soul one chearful ray"

— Blacklock, Thomas (1721-1791)

Date: 1746

"As the great light that rules the radiant sphere, / The passions of a generous mind extend"

— Ruffhead, James

Date: 1746

The "heart of man" may be probed with the Muse's microscope

— Ruffhead, James

Date: 1746

The "light of reason's ray" may be extinguished

— Ruffhead, James

Date: 1746

Words may make the soul glow with rapture

— Ruffhead, James

Date: 1748, 1777

"When we reflect on our past sentiments and affections, our thought is a faithful mirror, and copies its objects truly; but the colours which it employs are faint and dull, in comparison of those in which our original perceptions were clothed."

— Hume, David (1711-1776)

Date: 1748, 1777

"And by this means, we may, perhaps, attain a new microscope or species of optics, by which, in the moral sciences, the most minute, and most simple ideas may be so enlarged as to fall readily under our apprehension, and be equally known with the grossest and most sensible ideas, that can be the ...

— Hume, David (1711-1776)

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)