24. Not by substantial forms.
Upon the whole matter, it is evident that it is their own collections of sensible
qualities that men make the essences of their several sorts of substances; and that their real internal structures are
not considered by the greatest part of men in the sorting them. Much less were any substantial forms ever thought
on by any but those who have in this one part of the world learned the language of the schools: and yet those
ignorant men, who pretend not any insight into the real essences, nor trouble themselves about substantial forms,
but are content with knowing things one from another by their sensible qualities, are often better acquainted with
their differences; can more nicely distinguish them from their uses; and better know what they expect from each,
than those learned quick-sighted men, who look so deep into them, and talk so confidently of something more
hidden and essential.
