Date: 1783

Some philosophers "think, that the brains of old men, grown callous by length of time, are, like hard wax, equally tenacious of old impressions, and unsusceptible of new."

— Beattie, James (1735-1803)

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: 1796

"He who feels the spirit in him, will be conscious of possessing the pearl of great price, and will lock it up in the sanctuary of his heart, as his richest treasure, never to be despoiled of it by the seducing arts of false philosophy; never to exchange that pure gold, which is the same yesterda...

— Anonymous

Date: February 19, 1798

"Whether material substance unrefined, / Owns the strong impulse of instinctive mind, / Which to one centre points diverging lines, / Confounds, refracts, invig'rates, and combines?"

— Frere, John Hookham (1769-1846)