Chapter

1     III|        from Miletus -- says that air is the first principle of
2     III|           says that the infinite air and its density and rarity
3      IV|      were four elements -- fire, air, water, earth; and two elementary
4      IV| principle of all things; others, air others, fire; and others,
5       V|    ignorant. For Plato, with the air of one that has descended
6       V|  obtained the wide heaven in the air and the clouds,'" wishing
7     VII|          and some that it is the air; and others, the mind; and
8   XXVII|     about to return to the upper air, and had suffered everything
9   XXXVI|        but in the fifth element, air. And while he demanded that