The main difference between Dr. Dewey and me is that he judges a belief by its effects, whereas I judge it by its causes where a past occurrence is concerned. I consider such a belief “true,” or as nearly “true” as we can make it, if it has a certain kind of relation (sometimes very complicated) to its causes. Dr. Dewey holds that it has “warranted assertability”—which he substitutes for “truth”—if it has certain kinds of effects.
