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Meteorology By Aristotle

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Author Topic: Meteorology By Aristotle  (Read 2775 times)
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Bathos
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« Reply #90 on: August 31, 2009, 12:08:38 am »

Of the qualities of bodies hardness and softness are those which must
primarily belong to a determined thing, for anything made up of the
dry and the moist is necessarily either hard or soft. Hard is that
the surface of which does not yield into itself; soft that which does
yield but not by interchange of place: water, for instance, is not
soft, for its surface does not yield to pressure or sink in but there
is an interchange of place. Those things are absolutely hard and soft
which satisfy the definition absolutely, and those things relatively
so which do so compared with another thing. Now relatively to one
another hard and soft are indefinable, because it is a matter of degree,
but since all the objects of sense are determined by reference to
the faculty of sense it is clearly the relation to touch which determines
that which is hard and soft absolutely, and touch is that which we
use as a standard or mean. So we call that which exceeds it hard and
that which falls short of it soft.

Part 5

A body determined by its own boundary must be either hard or soft;
for it either yields or does not.

It must also be concrete: or it could not be so determined. So since
everything that is determined and solid is either hard or soft and
these qualities are due to concretion, all composite and determined
bodies must involve concretion. Concretion therefore must be discussed.

Now there are two causes besides matter, the agent and the quality
brought about, the agent being the efficient cause, the quality the
formal cause. Hence concretion and disaggregation, drying and moistening,
must have these two causes.

But since concretion is a form of drying let us speak of the latter
first.
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