Date: 1775

"In the wildest flights of fancy, it is probable that no single idea occurs to us but such as had a connection with some other impression or idea, previously existing in the mind."

— Priestley, Joseph (1733-1804)

Date: 1790, 1794

"How many fine-spun threads of reasoning would my wandering thoughts have broken; and how difficult should I have found it to arrange arguments and inferences in the cells of my brain!"

— Williams, Helen Maria (1759-1827)

Date: 1794

"At the same time that our young performer continues to play with great exactness this accustomed tune, she can bend her mind, and that intensely, on some other object, according with the fourth article of the preceding propositions."

— Darwin, Erasmus (1731-1802)

Date: 1798

"In a robust and unwavering judgment of this sort, there is a kind of witchcraft; when it decides justly, it produces a responsive vibration in every ingenuous mind."

— Godwin, William (1756-1836)