Book,  Paragraph

 1  II,  6 |          their intervals is ever observed. Nor again is a change in
 2  II,  8 |         of these. But neither is observed. (1) Suppose them to spin.
 3  II,  8 |          and no such movement is observed in them, clearly they have
 4  II,  13|        and causes to account for observed facts, but rather forcing
 5  II,  13|     think, in accounting for the observed facts on their view that
 6  II,  13|        this does not follow. The observed facts about earth are not
 7  II,  14|      except the first sphere, is observed to be passed, and to move
 8  II,  14|      stars. Yet no such thing is observed. The same stars always rise
 9 III,  7 |         and also contrary to the observed data of sense, according
10  IV,  2 | reconciling their views with the observed facts.~But those who attribute
11  IV,  5 |      such a thing has never been observed anywhere. Necessarily, then,