Date: 1742, 1777

"Let me consult my own passions and inclinations. In them must I read the dictates of nature; not in your frivolous discourses."

— Hume, David (1711-1776)

Date: 1748, 1777

"It may, therefore, be a subject worthy of curiosity, to enquire what is the nature of that evidence, which assures us of any real existence and matter of fact, beyond the present testimony of our senses, or the records of our memory."

— Hume, David (1711-1776)

Date: 1757

"Since, therefore, the mind of man appears of so loose and unsteddy a contexture, that, even at present, when so many persons find an interest in continually employing on it the chissel and the hammer, yet are they not able to engrave theological tenets with any lasting impression; how much more ...

— Hume, David (1711-1776)

Date: 1781

"Ideas of sense are but the first elements of thought: and the produce raised from these elements by the operation of the mind upon them is as far superiour to the elements themselves in variety, copiousness and use, as books are to the characters of which they are composed."

— Rotheram, John (1725–1789)