Book, Paragraph

1   I,  18|  been tested and thoroughly ascertained both that the gods boil
2   I,  58|   nor in that which is well ascertained and certain does it allow
3  II,   7| though they were proved and ascertained truths. For how can we of
4  II,  51|     anything which has been ascertained and set most clearly in
5  II,  58|    world? have you, indeed, ascertained and learned any of these
6 III,  44|  the knowledge of something ascertained, not to say after the manner