Date: April, 1783

"If impressions are made upon some substance in the mind, may not forgetfulness of them be only that the perceptive faculty of the soul is turned to other objects, while these still remain ready to be perceived whenever the 'mind's eye,' glances upon them?"

— Boswell, James (1740-1795)

Date: April, 1783

"Has he been at work all night without being conscious of it. Have other spirits been making impressions on his sensorium. Are there faculties in the mind quite separate one from another, which, like the eyes of Argus, may some of them be awake while others are asleep, and is the great faculty of...

— Boswell, James (1740-1795)

Date: 1783

"The human brain is a bodily substance; and sensible and permanent impressions made upon it must so far resemble those made on sand by the foot, or on wax by the seal, as to have certain shape, length, breadth, and deepness"

— Beattie, James (1735-1803)