Book,  Paragraph

  1   I,  2 |          their own nature, such as fire and earth with their kinds,
  2   I,  2 |           movement is circular, is fire or some other element, its
  3   I,  2 |       motion is upward, it will be fire or air, and if downward,
  4   I,  2 |           natural and unnatural to fire and earth respectively.
  5   I,  2 |        natural circular motion, as fire is ordained to fly up and
  6   I,  2 |          say, the body so moved is fire, this movement is just as
  7   I,  2 |           for any one can see that fire moves in a straight line
  8   I,  3 |       something else beyond earth, fire, air, and water, they gave
  9   I,  3 |            aither as equivalent to fire.~It is also clear from what
 10   I,  7 |         that is to say, the water, fire, &c., which compose it.
 11   I,  7 |       scattered particles, say, of fire, is infinite. But body we
 12   I,  7 |         place as the whole mass of fire. So that if it be weight
 13   I,  8 |       Moreover each of the bodies, fire, I mean, and earth and their
 14   I,  8 |          towards the centre, since fire must be identical with fire,
 15   I,  8 |        fire must be identical with fire, earth with earth, and so
 16   I,  8 |         also to our centre and its fire to our circumference. This,
 17   I,  8 |           world, move upwards, and fire to the centre; in the same
 18   I,  8 |           point to which earth and fire move naturally. For in general
 19   I,  8 |       mover may select. Thus, too, fire and earth move not to infinity
 20   I,  8 |           it is to the centre, and fire the nearer it is to the
 21   I,  8 |        case the larger the mass of fire or earth the slower would
 22   I,  8 |            the greater the mass of fire or earth the quicker always
 23  II,  2 |    indifferently in any direction; fire, for example, only upward,
 24  II,  3 |          earth must exist, so must fire. For, if one of a pair of
 25  II,  3 |          movement. But further, if fire and earth exist, the intermediate
 26  II,  3 |         follows on the presence of fire, which, with that of the
 27  II,  4 |        water, water by air, air by fire, and these similarly by
 28  II,  7 |       believe the upper body to be fire, the presumption being that
 29  II,  7 |           Movement tends to create fire in wood, stone, and iron;
 30  II,  7 |       substance which is closer to fire than these. An example is
 31  II,  7 |          air, which is turned into fire by the agitation produced
 32  II,  7 |          neither fiery nor move in fire, enough has been said.~
 33  II,  9 |            diffused mass of air or fire, as every one supposes,
 34  II,  13|           the centre, they say, is fire, and the earth is one of
 35  II,  13|           most precious thing: but fire, they say, is more precious
 36  II,  13|          of the sphere, but rather fire. The Pythagoreans have a
 37  II,  13|         and name it, or rather the fire which occupies that place,
 38  II,  13|          near us. Why, again, does fire move upward? Not, surely,
 39  II,  13|       because of the whirl. But if fire is naturally such as to
 40  II,  13|           centre, must stay there. Fire, then, will rest at the
 41  II,  13|           and not for a reason why fire remains at the extremity.
 42  II,  13|            is the natural place of fire, clearly earth must also
 43  II,  13|       still remains to explain why fire stays at the extremities.
 44  II,  13|        argument applies equally to fire. Fire, if set at the centre,
 45  II,  13|           applies equally to fire. Fire, if set at the centre, should
 46  II,  13|           corresponding portion of fire to the corresponding part
 47  II,  14|           centre of the whole. For fire and other light things move
 48  II,  14|         point to the centre, as of fire contrariwise to move from
 49 III,  1 |         earth and the lightness of fire, then some of the planes
 50 III,  2 |            air for instance out of fire, but in the absence of any
 51 III,  3 |         bodies contain potentially fire and earth, since one sees
 52 III,  3 | potentiality nor in actuality does fire contain flesh or wood, or
 53 III,  3 |     elements. Empedocles says that fire and earth and the related
 54 III,  3 |            and the like. Earth and fire are mixtures, composed of
 55 III,  3 |      others are generated. (To him fire and aither are the same
 56 III,  4 |         far to allot the sphere to fire. Air, water, and the rest
 57 III,  5 |           to others air, to others fire, to others again something
 58 III,  5 |          nature. But they say that fire is of all bodies the finest.
 59 III,  5 |           bodies the finest. Hence fire will be first in the natural
 60 III,  5 |         whether the finest body is fire or not makes no difference;
 61 III,  5 |       absolute distinction between fire, water, and air, but one
 62 III,  5 |         will be relatively to this fire, relatively to something
 63 III,  5 |           one another must be air, fire, earth, and water respectively.
 64 III,  5 |       bodies.~Those who start from fire as the single element, while
 65 III,  5 |          others. Some of them give fire a particular shape, like
 66 III,  5 |        most piercing of figures as fire is of bodies, or-more ingeniously-the
 67 III,  5 |             but the finest body is fire, while among figures the
 68 III,  5 |          primary figure: therefore fire will be a pyramid. Others,
 69 III,  5 |         the same could be shown of fire and of all bodies whose
 70 III,  5 |            then (a) those who give fire a special shape will have
 71 III,  5 |         have to say that a part of fire is not fire, because a pyramid
 72 III,  5 |         that a part of fire is not fire, because a pyramid is not
 73 III,  5 |          elements, since a part of fire will be neither fire nor
 74 III,  5 |            of fire will be neither fire nor any other element. And (
 75 III,  5 |         body is relatively to this fire and relatively to that air,
 76 III,  5 |            they will move, just as fire, in proportion as its quantity
 77 III,  6 |         matter of observation that fire, water, and every simple
 78 III,  6 |           the smaller body. Now in fire we observe a destruction
 79 III,  7 |           there would be a part of fire which was not fire and a
 80 III,  7 |         part of fire which was not fire and a part of earth which
 81 III,  7 |            Either, then, a part of fire is not fire, so that there
 82 III,  7 |        then, a part of fire is not fire, so that there is a body
 83 III,  8 |           with the bodies. Because fire is mobile and productive
 84 III,  8 |         adapted to the movement of fire, which is an upward and
 85 III,  8 |            if nothing hinders, and fire and the other bodies do
 86 III,  8 |      inference, therefore, is that fire and each several element
 87 III,  8 |      combustion of a body produces fire, and fire is a sphere or
 88 III,  8 |            body produces fire, and fire is a sphere or a pyramid.
 89 III,  8 |         cut and break up bodies as fire does; still it remains quite
 90 III,  8 |            division when allotting fire its shape. Fire is generally
 91 III,  8 |          allotting fire its shape. Fire is generally thought of
 92 III,  8 |            uniting being a mark of fire, while the separating is
 93 III,  8 |         the large ones will not be fire, and that figure will produce
 94  IV,  2 |          light. The facts are that fire is always light and moves
 95  IV,  2 |           composed) which disposes fire to move upward. If it were,
 96  IV,  2 |            greater the quantity of fire the slower it would move,
 97  IV,  2 |          more, and air, water, and fire are composed of the same
 98  IV,  2 |     lightness will disappear. Thus fire, they say, is the lightest
 99  IV,  2 |          void than a small mass of fire, is lighter than it, unless
100  IV,  2 |         attribute the lightness of fire to its containing so much
101  IV,  2 |           difficulties. For though fire be supposed to contain less
102  IV,  2 |            be a certain quantum of fire in which the amount of solid
103  IV,  2 |         solid than a large mass of fire. And similarly, if the distinction
104  IV,  2 |            For any two portions of fire, small or great, will exhibit
105  IV,  2 |            follow that much air or fire is heavier than a little
106  IV,  3 |           is like air and air like fire, and between intermediates
107  IV,  3 |           matter.) Thus to ask why fire moves upward and earth downward
108  IV,  3 |           what is already actually fire or earth moves, when nothing
109  IV,  4 |          is apparent, I mean, that fire, in whatever quantity, so
110  IV,  4 |     surface of it-but heavier than fire, since a portion of either,
111  IV,  4 |             sinks to the bottom of fire; compared together, however,
112  IV,  4 |            all the elements except fire have weight and all but
113  IV,  4 |           bodies has weight except fire, even air. Of this we have
114  IV,  4 |          all things-and we observe fire to move upward even in air
115  IV,  4 |           evidence of such a body. Fire, then, has no weight. Neither
116  IV,  4 |        like the upward movement of fire, the downward movement of
117  IV,  5 |       surface of all things except fire. But since there is one
118  IV,  5 |          that of earth. But if the fire above air is removed, it
119  IV,  5 |        move upward to the place of fire, except by constraint; and
120  IV,  5 |           into the vessel to which fire is applied, but not earth.
121  IV,  5 |           fails to move upward, so fire fails to move downward when
122  IV,  5 |     withdrawn from beneath it: for fire has no weight even in its
123  IV,  5 |      asserted are void and plenum. Fire, then, as moving upward,
124  IV,  5 |           in air, it will be said, fire preponderates, in water,
125  IV,  5 |           of water containing more fire than a little air, and a
126  IV,  5 |    anywhere. Necessarily, then, as fire goes up because it has something,