Date: 1885

"For example, to express our ideas concerning their physical basis we use different metaphors--stored up ideas, engraved images, well-beaten paths."

— Ebbinghaus, Hermann (1850-1909)

Date: 1887

"A fool takes in all the lumber of every sort that he comes across, so that the knowledge which might be useful to him gets crowded out, or at best is jumbled up with a lot of other things, so that he has a difficulty in laying his hands upon it."

— Doyle, Arthur Conan (1859-1930)

Date: 1887

"It is a mistake to think that that little room [the 'brain-attic'] has elastic walls and can distend to any extent"

— Doyle, Arthur Conan (1859-1930)

Date: 1901-2, 1902

"Few people who have not expressly reflected on the matter realize how constantly this factor of inhibition is upon us, how it contains and moulds us by its restrictive pressure almost as if we were fluids pent within the cavity of a jar."

— James, William (1842-1910)