Date: 1787
"They will not always expertly distinguish the several species of geniuses, the golden, the silver, the brazen, and the iron."
preview | full record— Adams, John (1735-1826)
Date: 1820
"And they [Stewart, Tracy, Cabanis] ask why may not the mode of action called thought, have been given to a material organ of peculiar structure, as that of magnetism is to the needle, or of elasticity to the spring by a particular manipulation of the steel."
preview | full record— Jefferson, Thomas (1743-1826)