Book,  Paragraph

 1   I,  10|      there will have to be some cause of change, and if this had
 2   I,  10|        that the contrary is the cause of each state. So that if
 3   I,  11|      process of destruction may cause not to be; and also (c)
 4   I,  12|   matter of the thing being the cause equally of its existence
 5  II,  1 |    other movements, to some the cause of their beginning, to others
 6  II,  6 |         moved by something, the cause of the irregularity of movement
 7  II,  9 |        motion would necessarily cause a noise of tremendous strength
 8  II,  13|      trouble of seeking for the cause. Hence the sharp rebuke
 9  II,  13|    flatness of the earth as the cause of its staying still. Thus,
10  II,  13|      its flatness cannot be the cause of its immobility. But in
11  II,  13| downward movement. For the same cause must necessarily have the
12  II,  13|         have been then also the cause. It is absurd too not to
13 III,  1 |     have power in themselves to cause movement, and also their
14 III,  2 |        and the prime mover must cause motion not by constraint
15 III,  2 |    there is no ultimate natural cause of movement and each preceding
16 III,  2 |        For the prime mover must cause motion in virtue of its
17 III,  2 |        infinite is that, if the cause of movement is single, they
18  IV,  2 |      who think and say that the cause is to be found elsewhere.
19  IV,  2 |    carries it. Also what is the cause of its movement? Not, surely,