Date: April 30, 1730

"The spirit of the brain, distilled by the heat of the imagination, like some chemical preparations, when exposed to the air, is apt to smoke, to take fire, to crack, and bounce, to the no small disturbance of the neighbourhood."

— Richard Russel and John Martyn

Date: 1731

"And indeed the Reason is the same both in Visibles and Audibles; for the Sense of a Man, by reason of its Vicinity and Neighbourhood to Reason and Intellectuality, lodged in the same Soul with if, must needs be Coloured with some Tincture of it; or have some Passive Impresses of the fame upon it...

— Cudworth, Ralph (1617-1688)

Date: 1731

"So if the Knowledge of Corporeal Things were but a Secondary and Derivative Result from Sense, (though it cannot be conceived that the Passion of Sense should ray upon the Intellect, so as to beget a Secondary Passion there, any more than one Shadow should cast another) then Knowledge would be m...

— Cudworth, Ralph (1617-1688)

Date: 1733

"I love to pour out all myself, as plain / As downright Shippen, or as old Montagne. / In them, as certain to be lov'd as seen, / The Soul stood forth, nor kept a Thought within; / In me what Spots (for Spots I have) appear, / Will prove at least the Medium must be clear."

— Pope, Alexander (1688-1744)

Date: 1734

"And perhaps it is owing to this Medium or Canal, among other things, that having two Eyes and two Ears we do not see nor hear double."

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

Date: 1734

"Is then my heart to all the world beside / Softer than melting wax or summer snow, / But to myself harder than adamant?"

— Watts, Isaac (1674-1748)

Date: 1734

"I'm in a raging storm, / Where seas and skies are blended, while my soul / Like some light worthless chip of floating cork / Is tost from wave to wave."

— Watts, Isaac (1674-1748)

Date: 1737, 1743

"The best way to prove the clearness of our mind, is by shewing its Faults; as when a Stream discovers the Dirt at the bottom, it convinceth us of the transparency and purity of the Water."

— Pope, Alexander (1688-1744)

Date: January 1739

"The vividness of the first conception diffuses itself along the relations, and is convey'd, as by so many pipes or canals, to every idea that has any communication with the primary one."

— Hume, David (1711-1776)

Date: January 1739

"The attention is on the stretch; the posture of the mind is uneasy; and the spirits being diverted from their natural course, are not governed in their movements by the same laws, at least not to the same degree, as when they flow in their usual channel."

— Hume, David (1711-1776)