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part of the system. These sheets represent altogether
different universes with which our
discourse has to do. In the Johns Hopkins
Studies in Logic I printed a note of several pages
on the universe of qualities,— marks, as I
then called them. But I failed to see that
I was then wandering quite beyond the bounds
of the logic of relations proper. For the relations
of which the so-called “logic of relatives”
treats are existential relations, which the non-
existence of either relate or correlate
reduces to nullity. Now, qualities are
not properly speaking individuals. All
the qualities you actually have ever thought
of might, no doubt, be counted; since you