The English works of Thomas Hobbes of Malmesbury, Volume 01 (of 11)Hobbes, Thomas
Philosophy
The English works of Thomas Hobbes of Malmesbury, Volume 01 (of 11)
Hobbes, Thomas
Philosophy, English -- 17th century
5. There are many distinctions of propositions, whereof the first is,
that some are _universal_, others _particular_, others _indefinite_, and
others _singular_; and this is commonly called the distinction of
_quantity_. An _universal_ proposition is that whose subject is affected
with the sign of an universal name, as _every man is a living creature_.
_Particular_, that whose subject is affected with the sign of a
particular name, as _some man is learned_. An _indefinite_ proposition
has for its subject a common name, and put without any sign, as _man is
a living creature_, _man is learned_. And a _singular_ proposition is
that whose subject is a singular name, as _Socrates is a philosopher_,
_this man is black_.
[Sidenote: Affirmative and negative.]
6. The second distinction is into _affirmative_ and _negative_, and is
called the distinction of _quality_. An _affirmative_ proposition is
that whose predicate is a positive name, as _man is a living creature_.
_Negative_, that whose predicate is a negative name, as _man is not a
stone_.
[Sidenote: True & false.]
7. The third distinction is, that one is _true_, another _false_. A
_true_ proposition is that, whose predicate contains, or comprehends its
subject, or whose predicate is the name of every thing, of which the
subject is the name; as _man is a living creature_ is therefore a true
proposition, because whatsoever is called _man_, the same is also called
_living creature_; and _some man is sick_, is true, because _sick_ is
the name of _some man_. That which is not true, or that whose predicate
does not contain its subject, is called a _false_ proposition, as _man
is a stone_.
Now these words _true_, _truth_, and _true proposition_, are equivalent
to one another; for truth consists in speech, and not in the things
spoken of; and though _true_ be sometimes opposed to _apparent_ or
_feigned_, yet it is always to be referred to the truth of proposition;
for the image of a man in a glass, or a ghost, is therefore denied to be
a very man, because this proposition, _a ghost is a man_, is not true;
for it cannot be denied but that a ghost is a very ghost. And therefore
truth or verity is not any affection of the thing, but of the
proposition concerning it. As for that which the writers of metaphysics
say, that _a thing_, _one thing_, and _a very thing_, are equivalent to
one another, it is but trifling and childish; for who does not know,
that _a man_, _one man_, and _a very man_, signify the same.
[Sidenote: True & false belongs to speech, and not to things.]
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