James Frederick Ferrier,
Blackwood's Magazine
(1839)
“ When the phenomena of nature have been observed and classified, the science of nature is ended. But when the phenomena of man, his feelings, intellectual, and other states, have been observed and classified, true psychology has yet to begin:—we have yet to observe our observations of these phenomena,—this fact constituting, in our opinion, the only true and all-comprehensive fact which the science of man has to deal with—and only after it has been taken up and faithfully observed, can philosophy be said to have commenced. ”
