Date: 1692

"He has clearly overthrown all those Metaphysical Whymsies, which infected mens Brains with a Spice of Madness, whereby they feign'd a Knowledge where they had none, by making a noise with Sounds, without clear and distinct Significations."

— Molyneux, William (1656-1698)

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)

Date: 1742

"The mind, unexercised, finds every delight insipid and loathsome; and ere yet the body, full of noxious humours, feels the torment of its multiplied diseases, your nobler part is sensible of the invading poison, and seeks in vain to relieve its anxiety by new pleasures, which still augment the f...

— Hume, David (1711-1776)