Book,  Paragraph

 1   I,  5 |           stationary, then, makes no difficulty for our argument, since
 2   I,  9 |            We may begin by raising a difficulty. From one point of view
 3   I,  11|              which is destroyed with difficulty.~This being so, we must
 4  II,  5 |            we said before and as the difficulty just stated itself suggests,
 5  II,  5 |             reason and so solves our difficulty. Supposing that nature is
 6  II,  9 |          have advanced. For the very difficulty which made the Pythagoreans
 7  II,  12|           stars is derived. A second difficulty which may with equal justice
 8  II,  12| consideration we shall not find this difficulty by any means insoluble.
 9  II,  12|           step or two present little difficulty, but as the series extends
10  II,  12|            as the series extends the difficulty grows. We must, then, think
11  II,  12|  multiplicity of movement.~As to the difficulty that into the one primary
12  II,  13|         hemisphere, there is no more difficulty, they think, in accounting
13  II,  13|              has been conceived.~The difficulty must have occurred to every
14  II,  13|              nothing to stop it. The difficulty then, has naturally passed
15  II,  14|           the solution of a possible difficulty. The earth, it might be
16  II,  14|          nature to move. Such is the difficulty. A short consideration will
17 III,  2 |           infinite process. The same difficulty is involved even if it is
18 III,  5 |         something else air. The same difficulty is involved equally in the
19 III,  5 |         element, while avoiding this difficulty, involve themselves in many
20 III,  7 |    resolution into planes, the first difficulty is that the elements cannot