In ordinary discourse it is not always explicitly stated whether
predication is universal or particular; it would be very natural to say
_Lions inhabit Africa_, leaving it, as far as the words go, uncertain
whether we mean _all_ or _some_ lions. Propositions whose quantity is
thus left indefinite are technically called 'preindesignate,' their
quantity not being stated or designated by any introductory expression;
whilst propositions whose quantity is expressed, as _All
foundling-hospitals have a high death-rate_, or _Some wine is made from
grapes_, are said to be 'predesignate.' Now, the rule is that
preindesignate propositions are, for logical purposes, to be treated as
particular; since it is an obvious precaution of the science of proof,
in any practical application, _not to go beyond the evidence_. Still,
the rule may be relaxed if the universal quantity of a preindesignate
proposition is well known or admitted, as in _Planets shine with
reflected light_--understood of the planets of our solar system at the
present time. Again, such a proposition as _Man is the paragon of
animals_ is not a preindesignate, but an abstract proposition; the
subject being elliptical for _Man according to his proper nature_; and
the translation of it into a predesignate proposition is not _All men
are paragons_; nor can _Some men_ be sufficient, since an abstract can
only be adequately rendered by a distributed term; but we must say, _All
men who approach the ideal_. Universal real propositions, true without
qualification, are very scarce; and we often substitute for them
_general_ propositions, saying perhaps--_generally, though not
universally, S is P_. Such general propositions are, in strictness,
particular; and the logical rules concerning universals cannot be
applied to them without careful scrutiny of the facts.
The marks or predesignations of Quantity commonly used in Logic are: for
Universals, _All_, _Any_, _Every_, _Whatever_ (in the negative _No_ or
_No one_, see next §); for Particulars, _Some_.
Now _Some_, technically used, does not mean _Some only,_ but _Some at
least_ (it may be one, or more, or all). If it meant '_Some only_,'
every particular proposition would be an exclusive exponible (chap. ii.
§ 3); since _Only some men are wise_ implies that _Some men are not
wise_. Besides, it may often happen in an investigation that all the
instances we have observed come under a certain rule, though we do not
yet feel justified in regarding the rule as universal; and this
situation is exactly met by the expression _Some_ (_it may be all_).
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