Edward Bradford Titchener,
A Beginner's Psychology
“ Science cannot ask the physician to give up a theory which works. She can only point out that present utility is no test of ultimate truth,—there were plenty of useful inventions in the days when the physics of heat was dominated by the theory of caloric, and the physics of light by the theory of emission!—and that nobody has ever observed, or can ever observe, the subconscious at work; the wonderful things that it does testify rather to their reporter’s thought and imagination, to his conscious ingenuity in explaining, than to the scientific reality of the subconscious itself. ”
