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
things, seeing the difference betwixt negatives and affirmatives is only
this, that in the former the subject is affirmed by a negative name, and
by a positive in the latter, it is superfluous to consider any other
_mood_ in direct _figure_, besides that, in which all the propositions
are both universal and affirmative.
[Sidenote: What is in the mind answering to a syllogism.]
8. The thoughts in the mind answering to a direct syllogism, proceed in
this manner; first, there is conceived a phantasm of the thing named,
with that accident or quality thereof, for which it is in the minor
proposition called by that name which is the subject; next, the mind has
a phantasm of the same thing with that accident, or quality, for which
it hath the name, that in the same proposition is the predicate;
thirdly, the thought returns of the same thing as having that accident
in it, for which it is called by the name, that is the predicate of the
major proposition; and lastly, remembering that all those are the
accidents of one and the same thing, it concludes that those three names
are also names of one and the same thing; that is to say, the conclusion
is true. For example, when this syllogism is made, _man is a living
creature_, _a living creature is a body_, therefore, _man is a body_,
the mind conceives first an image of a man speaking or discoursing, and
remembers that that, which so appears, is called _man_; then it has the
image of the same man moving, and remembers that that, which appears so,
is called _living creature_; thirdly, it conceives an image of the same
man, as filling some place or space, and remembers that what appears so
is called _body_; and lastly, when it remembers that that thing, which
was extended, and moved and spake, was one and the same thing, it
concludes that the three names, _man_, _living creature_, and _body_,
are names of the same thing, and that therefore _man is a living
creature_ is a true proposition. From whence it is manifest, that living
creatures that have not the use of speech, have no conception or thought
in the mind, answering to a syllogism made of universal propositions;
seeing it is necessary to think not only of the thing, but also by turns
to remember the divers names, which for divers considerations thereof
are applied to the same.
[Sidenote: The first indirect figure how made.]
9. The rest of the figures arise either from the inflexion, or inversion
of the first or direct figure; which is done by changing the major, or
minor, or both the propositions, into converted propositions equipollent
to them.
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