Date: w. 1755, 1777

"But admitting a spiritual substance to be dispersed throughout the universe, like the ethereal fire of the Stoics, and to be the only inherent subject of thought, we have reason to conclude from analogy, that nature uses it after the same manner she does the other substance, matter."

— Hume, David (1711-1776)

Date: w. 1755, 1777

"She [Nature] employs it [spiritual substance] as a kind of paste or clay; modifies it into a variety of forms and existences; dissolves after a time each modification, and from its substance erects a new form."

— Hume, David (1711-1776)

Date: w. 1755, 1777

"And does any thing steel the breast of judges and juries against the sentiments of humanity but reflections on necessity and public interest?"

— Hume, David (1711-1776)

Date: 1781

"What becomes of the old furniture when the new is continually introduced? In what hidden cells are these solid ideas lodged, that they may be produced again in good repair when wanted to fill the apartments of memory?"

— Rotheram, John (1725–1789)

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)

Date: 1781

"So that all material objects, in themselves, and to each other, are dark and naked: to the mind alone are they cloathed in all the pleasing variety of sensible qualities."

— Rotheram, John (1725–1789)

Date: 1781

"Mind, like a bride from a nobler family, enriches matter by its union, and brings as a dower, possessions before unknown. Henceforth matter appears cloathed in a gayer and richer garment; and the fruits of this union are a new progeny, to which matter, confining its alliance to its own family, c...

— Rotheram, John (1725–1789)

Date: 1781

"When the outward object hath made its impression, and stamped the idea, the passive organ hath then done its part, and the rest is accomplished by the presiding mind."

— Rotheram, John (1725–1789)

Date: 1781

"Which, like a skilful artist, goes to work upon the materials furnished by the senses; comparing selecting, analysing, and abstracting; till by placing them in different points of view their fitness, relations, and dependencies are seen."

— Rotheram, John (1725–1789)

Date: 1781

"But the difference is much greater between the ideas of sense, the materials upon which the mind first begins its work, and the truths produced by its operations, than between the rough marble, and the statue formed by the skill of PHIDIAS."

— Rotheram, John (1725–1789)