Date: 1734

"And if it be said that the Understanding, which is but passive it self, like the bodily Eye, cannot be called the Leader of the rest of the Faculties; it must be granted, that (strictly speaking) it is rather the Light than the Guide: for if we consider it in the three Operations mention'd by th...

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

Date: 1751, 1777

"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: 1767

"An original Author indeed will frequently be apt to exceed in the use of this ornament, by pouring forth such a blaze of imagery, as to dazzle and overpower the mental sight; the effect of which is, that his Writings become obscure, if not unintelligible to common Readers; just as the eye is for...

— Duff, William (1732-1815)

Date: 1774

"While a man is engaged in composition or investigation, he often seems to himself to be fired with his subject, and to teem with ideas; but on revising the work, finds that his judgment is offended, and his time lost. An idea that sparkled in the eye of fancy, is often condemned by judgment as f...

— Gerard, Alexander (1728-1795)

Date: April, 1783

"An Hypochondriack is subject to forgetfulness, which may be owing to another cause; that there is a darkness in his mind, or that its perceptive eye is injured and weak at times."

— Boswell, James (1740-1795)