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: 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)