Book, Chapter

1     I, 8 |  their existence was of short duration, but afterwards also generation
2    IV, 3 |       place) after a lapse of duration. For there being an interval
3    IV, 3 |   ignorant of the quantity of duration to a nicety, never will
4    IV, 5 | another by a long interval of duration, should have been born under
5    IV, 8 |   greater or less portions of duration. In the next place, they
6    IV, 43|     of the orbit of six days' duration, (that is), of the duad,
7    VI, 9 |      infinite and unalterable duration, as being that which no
8    IX, 25| periods of time of sufficient duration. After this repose, it is