William James, The Principles of Psychology, Volume 1…
“ This 'inexplicable tie' which connects the feelings, this 'something in common' by which they are linked and which is not the passing feelings themselves, but something 'permanent,' of which we can 'affirm nothing' save its attributes and its permanence, what is it but metaphysical Substance come again to life? Much as one must respect the fairness of Mill's temper, quite as much must one regret his failure of acumen at this point. ”
