judgment.'--('Discussions on Philos.,' p. 614.)

Here Sir W. Hamilton assumes that the quantity of the predicate is
always understood in thought; and the same assumption is often repeated,
in the Appendix to his 'Lectures on Logic,' p. 291 and elsewhere, as if
it was alike obvious and incontestable. Now it is precisely on this
point that issue is here taken with Sir W. Hamilton. Mr Mill denies
altogether (p. 437) that the quantity of the predicate is always
understood or present in thought, and appeals to every reader's
consciousness for an answer:--

'Does he, when he judges that all oxen ruminate, advert even
in the minutest degree to the question, whether there is
anything else that ruminates? Is this consideration at all
in his thoughts, any more than any other consideration
foreign to the immediate subject? One person may know that
there are other ruminating animals, another may think that
there are none, a third may be without any opinion on the
subject; but if they all know what is meant by ruminating,
they all, when they judge that every ox ruminates, mean
precisely the same thing. The mental process they go
through, _as far as that one judgment is concerned_, is
precisely identical; though some of them may go on farther,
and _add other judgments_ to it.'

The last sentence cited from Mr Mill indicates the vice of Sir W.
Hamilton's proceeding in quantifying the predicate, and explains why it
was that logicians before him declined to do so. Sir W. Hamilton, in
this proceeding, insists on stating explicitly, not merely all that is
thought implicitly, but a great deal more;[14] adding to it something