Part

 1 4 |        by eating and drinking certain things, they are improved
 2 5 |  namely, barbarians, and even certain of the Greeks, live in the
 3 5 |       would be sufficient for certain of the sick, and be manifestly
 4 6 |       soups do not agree with certain persons in their diseases,
 5 9 |       must aim at attaining a certain measure, and yet this measure
 6 10|      two meals. But there are certain persons who cannot readily
 7 19|     which, being present in a certain fashion, the complaint exists,
 8 20|                           20. Certain sophists and physicians
 9 20| philosophy, as Empedocles and certain others have described what
10 20|      one cannot know anything certain respecting nature from any
11 21|  spontaneously, and some from certain things accidentally administered.