Date: 1751, 1777

"And, indeed, without such a correction of appearances, both in internal and external sentiment, men could never think or talk steadily on any subject; while their fluctuating situations produce a continual variation on objects, and throw them into such different and contrary lights and positions."

— Hume, David (1711-1776)

Date: 1759

"Bring him into society, and he is immediately provided with the mirror which he wanted before. It is placed in the countenance and behaviour of those he lives with, which always mark when they enter into, and when they disapprove of his sentiments; and it is here that he first views the propriet...

— Smith, Adam (1723-1790)

Date: 1760-1761, 1762

"But of all the wonders of the east, the most useful, and I should fancy, the most pleasing, would be the looking-glass of Lao, which reflects the mind as well as the body."

— Goldsmith, Oliver (1728?-1774)

Date: 1760-1761, 1762

"I must own, by this time I began myself to suspect the fidelity of my mirror; for as the ladies appeared at least to have the merit of rising early, since they were up at five, I was amazed to find nothing of this good quality pictured upon their minds in the reflection; I was resolved therefore...

— Goldsmith, Oliver (1728?-1774)

Date: 1764

"Such principles are parts of our constitution, no less than the power of thinking: reason can neither make nor destroy them; nor can it do any thing without them: it is like a telescope, which may help a man to see farther, who hath eyes; but without eyes, a telescope shows nothing at all."

— Reid, Thomas (1710-1796)

Date: w. October 27, 1777, printed 1788

"In a man's letters, you know, Madam, his soul lies naked, his letters are only the mirror of his breast, whatever passes within him is shown undisguised in its natural process."

— Johnson, Samuel (1709-1784)