the cause of the affection are both termed cold. That is called
hard to which our flesh yields, and soft which yields to our
flesh; and things are also termed hard and soft relatively to one
another. That which yields has a small base; but that which rests
on quadrangular bases is firmly posed and belongs to the class
which offers the greatest resistance; so too does that which is
the most compact and therefore most repellent. The nature of the
light and the heavy will be best understood when examined in
connexion with our notions of above and below; for it is quite a
mistake to suppose that the universe is parted into two regions,
separate from and opposite to each other, the one a lower to
which all things tend which have any bulk, and an upper to which
things only ascend against their will. For as the universe is in
the form of a sphere, all the extremities, being equidistant from
the centre, are equally extremities, and the centre, which is
equidistant from them, is equally to be regarded as the opposite
of them all. Such being the nature of the world, when a person
says that any of these points is above or below, may he not be
justly charged with using an improper expression? For the centre
of the world cannot be rightly called either above or below, but
is the centre and nothing else; and the circumference is not the
centre, and has in no one part of itself a different relation to
the centre from what it has in any of the opposite parts. Indeed,
when it is in every direction similar, how can one rightly give
to it names which imply opposition? For if there were any solid
body in equipoise at the centre of the universe, there would be
nothing to draw it to this extreme rather than to that, for they
are all perfectly similar; and if a person were to go round the
world in a circle, he would often, when standing at the antipodes
of his former position, speak of the same point as above and
below; for, as I was saying just now, to speak of the whole which
is in the form of a globe as having one part above and another
below is not like a sensible man. The reason why these names are
used, and the circumstances under which they are ordinarily
applied by us to the division of the heavens, may be elucidated
by the following supposition:—if a person were to stand in that
part of the universe which is the appointed place of fire, and
where there is the great mass of fire to which fiery bodies
gather—if, I say, he were to ascend thither, and, having the
power to do this, were to abstract particles of fire and put them
in scales and weigh them, and then, raising the balance, were to
draw the fire by force towards the uncongenial element of the