The New International Encyclopædia…
“ Even the few writers who still cling to the substantialist view make no use of the assumption in their actual presentation of psychological facts and laws; it is only in their concluding remarks, at the point of transition from psychology proper to metaphysics, that mind, the ‘unit being,’ is introduced. At the same time, it would be entirely erroneous to apply Lange's phrase, without qualification, to mental science. A psychology without some sort of mind would be impossible. The new psychology keeps the term mind, but defines it as the sum-total of an individual's mental experience. ”
