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: March, 1778

"An antient philosopher indeed, full of real or pretended honesty, declared it to be his wish that there were a window in his breast that every body might see the integrity and purity of his thoughts. It would be truly be very pretty and amusing if our bodies were transparent, so that we could se...

— Boswell, James (1740-1795)

Date: April, 1778

"How then can we represent, by a sensible image, the mind as a theatre to its own actings? Let us conceive a spacious saloon, in which our thoughts and passions exert themselves, and let its walls be encrusted with mirrour, for the purpose of reflection, in the same manner that rooms in voluptuou...

— Boswell, James (1740-1795)

Date: April, 1778

"Were the grand idea of the theatre of conscience in its full extant, and with all its enjoyments to be constantly in our contemplation, we should not forfeit the higher approbation of ourselves, who are really judges for the paultry, inattentive, and transient plaudits of others."

— Boswell, James (1740-1795)

Date: April, 1778

"That the merited applause of mankind is highly valuable, and a great immediate incitement to act well, I certainly agree: and therefore to return to the image of the mind as a theatre, I would not have it close as an amphitheatre; but open to the inspection of the world."

— Boswell, James (1740-1795)

Date: 1779

"All our ideas derived from the senses are confusedly false and illusive; and cannot therefore be supposed to have place in a supreme intelligence: and as the ideas of internal sentiment, added to those of the external senses, compose the whole furniture of human understanding, we may conc...

— Hume, David (1711-1776)

Date: April, 1783

If human souls are of an essence pure, / How fix ideas in them to endure? / And if material, canst not thou, Monro, / The little cells of our ideas show?"

— Boswell, James (1740-1795)

Date: April, 1783

"When we talk of a storehouse of our ideas, we are only forming an imagination of something similar to an enclosed portion of space in which material objects are reposited. But who ever actually saw this storehouse, or can have any clear perception of it when he endeavours by thinking closely to ...

— Boswell, James (1740-1795)

Date: April, 1783

"As, however, his penetration could not but see that all this is absolutely incompatible with a spiritual substance which mind is, he, immediately without any interruption or preparation whatever, proceeds very quietly, though most effectually, to contradict what he has been assuming, and to anni...

— Boswell, James (1740-1795)

Date: 1783

"At this window (as the wise man calls it) the soul is often seen in her genuine character, even when the porter below (I mean the tongue) is endeavouring to persuade us, that she is not within, that she is otherwise employed, or that she is quite a different person"

— Beattie, James (1735-1803)