Date: August 31, 1837

"But he, in his private observatory, cataloguing obscure and nebulous stars of the human mind, which as yet no man has thought of as such, — watching days and months, sometimes, for a few facts; correcting still his old records; — must relinquish display and immediate fame."

— Emerson, Ralph Waldo (1803-1882)

Date: 1841

"It is the solar system of the mind."

— Marx, Karl (1818-1883)

Date: January, 1884

"The demand for atoms of feeling, which shall be real units, seems a sheer vagary, an illegitimate metaphor."

— James, William (1842-1910)

Date: January, 1884

"The best symbol for [the brain] seems to be an electric conductor, the amount of whose charge at any one point is a function of the total charge elsewhere."

— James, William (1842-1910)