authorities like Aristotle hold that no question can
arise which does not come under one of these heads.
Some subtract two of them, namely number
and substitute for what I have called action,
or in Greek πράγματα.
I have thought it sufficient to notice these doctrines, for fear someone might
complain of their omission. Still I do not consider
are sufficiently determined by these categories, nor that the latter cover every possible kind
of topic, as will be clear to any that read carefully
what I have to say on both points. For there will be
found to be many topics that are not covered by