Date: 1790, 1794, 1795, 1818, 1827

"When I came home; on the abyss of the five senses, where a flat sided steep frowns over the present world. I saw a mighty Devil folded in black clouds, hovering on the sides of the rock, with corroding fires he wrote the following sentence now percieved by the minds of men, & read by them on earth"

— Blake, William (1757-1827)

Date: 1790, 1794, 1795, 1818, 1827

"For man has closed himself up, till he sees all things thro' narrow chinks of his cavern."

— Blake, William (1757-1827)

Date: 1791, 1806

"Oh! horrid Night! / Thou prying Monitor confest! / Whose key unlocks the human breast, / And bares each avenue to mental sight!"

— Robinson [Née Darby], Mary [Perdita] (1758-1800)

Date: 1797

"Light of the world, whose cheering ray / Illumes the realms of mind"

— Barbauld, Anna Letitia [née Aikin] (1743-1825)

Date: 1812

The realms of mind are ruled by shades

— Barbauld, Anna Letitia [née Aikin] (1743-1825)

Date: 1820

"Hark, sister! what a low yet dreadful groan / Quite unsuppressed is tearing up the heart / Of the good Titan, as storms tear the deep, / And beasts hear the sea moan in inland caves."

— Shelley, Percy Bysshe (1792-1822)

Date: 1820

"To cheer thy state / I bid ascend those subtle and fair spirits, / Whose homes are the dim caves of human thought, / And who inhabit, as birds wing the wind, / Its world-surrounding aether."

— Shelley, Percy Bysshe (1792-1822)

Date: 1820

"On a poet's lips I slept / Dreaming like a love-adept / In the sound his breathing kept; / Nor seeks nor finds he mortal blisses, / But feeds on the aëreal kisses / Of shapes that haunt thought's wildernesses."

— Shelley, Percy Bysshe (1792-1822)

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)