A System of Logic, Ratiocinative and Inductive (Vol. 1 of 2)
John Stuart Mill · en
This first example of a train of reasoning is still extremely simple, the
series consisting of only two syllogisms. The following is somewhat more
complicated:—No government, which earnestly seeks the good of its
subjects, is likely to be overthrown; some particular government earnestly
seeks the good of its subjects, therefore it is not likely to be
overthrown. The major premiss in this argument we shall suppose not to be
derived from considerations _à priori_, but to be a generalization from
history, which, whether correct or erroneous, must have been founded on
observation of governments concerning whose desire of the good of their
subjects there was no doubt. It has been found, or thought to be found,
that these were not likely to be overthrown, and it has been deemed that
those instances warranted an extension of the same predicate to any and
every government which resembles them in the attribute of desiring
earnestly the good of its subjects. But _does_ the government in question
thus resemble them? This may be debated _pro_ and _con_ by many arguments,
and must, in any case, be proved by another induction; for we cannot
directly observe the sentiments and desires of the persons who carry on
the government. To prove the minor, therefore, we require an argument in
this form: Every government which acts in a certain manner, desires the
good of its subjects; the supposed government acts in that particular
manner, therefore it desires the good of its subjects. But is it true that
the government acts in the manner supposed? This minor also may require
proof; still another induction, as thus:—What is asserted by intelligent
and disinterested witnesses, may be believed to be true; that the
government acts in this manner, is asserted by such witnesses, therefore
it may be believed to be true. The argument hence consists of three steps.
Having the evidence of our senses that the case of the government under
consideration resembles a number of former cases, in the circumstance of
having something asserted respecting it by intelligent and disinterested
witnesses, we infer, first, that, as in those former instances, so in this
instance, the assertion is true. Secondly, what was asserted of the
government being that it acts in a particular manner, and other
governments or persons having been observed to act in the same manner, the
government in question is brought into known resemblance with those other
governments or persons; and since they were known to desire the good of
the people, it is thereupon, by a second induction, inferred that the
particular government spoken of, desires the good of the people. This
brings that government into known resemblance with the other governments
which were thought likely to escape revolution, and thence, by a third
induction, it is predicted that this particular government is also likely
to escape. This is still reasoning from particulars to particulars, but we