Date: 1776

"Hence the strange parade he makes with regions, and recesses, hollow caverns, and private seats, wastes, and wildernesses, fruitful and cultivated tracks, words which, though they have a precise meaning as applied to country, have no definite signification as applied to mind."

— Campbell, George (1719-1796)

Date: 1800

"Every sense was an inlet of pleasure, because it was an avenue to knowledge; and my soul brooded over the world of ideas, and glowed with exultation at the grandeur and beauty of its own creations"

— Brown, Charles Brockden (1771-1810)

Date: 1820

"Only a sense / Remains of them, like the omnipotence / Of music, when the inspired voice and lute / Languish, ere yet the responses are mute, / Which through the deep and labyrinthine soul, / Like echoes through long caverns, wind and roll."

— Shelley, Percy Bysshe (1792-1822)