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)

Date: 1785

"To this it is owing, that, in ancient languages, the word which denotes the soul, is that which properly signifies breath or air."

— Reid, Thomas (1710-1796)