Some day the gradual origin of this tendency in lower organisms will be shown, how dull mole's eyes of these organizations at first see everything as identical, how then, when the various stimuli of pleasure and un pleasure become more noticable, different substances are gradually distinguished, but each one with ONE attribute, that is, with one single relationship to such an organism. The first stage of logic is judgment, whose essence consists, as the best logicians have determined, in belief.
All belief is based on the feeling of pleasure or pain in relation to the feeling subject.
A new, third feeling as the result of two preceding feelings is judgment in the lowest form.