through it, because nothing is swifter than the soul; no swiftness is comparable to the swiftness of the soul, which, should it remain uncorrupt and without alteration, must necessarily be carried on with such velocity as to penetrate and divide all this atmosphere, where clouds, and rain, and winds are formed, which, in consequence of the exhalations from the earth, is moist and dark: but, when the soul has once got above this region, and falls in with, and recognizes, a nature like its own, it then rests upon fires composed of a combination of thin air and a moderate solar heat, and does not aim at any higher flight; for then, after it has attained a lightness and heat resembling its own, it moves no more, but remains steady, being balanced, as it were, between two equal weights. That, then, is its natural seat where it has penetrated to something like itself, and where, wanting nothing further, it may be supported and maintained by the same aliment which nourishes and maintains the stars.
Now, as we are usually incited to all sorts of desires by the stimulus of the body, and the more so as we endeavor to rival those who are in possession of what we long for, we shall certainly be happy when, being emancipated from that body, we at the same time get rid of these desires and this rivalry. And that which we do at present, when, dismissing all other cares, we curiously examine and look into anything, we shall then do with greater freedom; and we shall employ ourselves entirely in the contemplation and examination of things; because there is naturally in our minds a certain insatiable desire to know the truth, and the very region itself where we shall arrive, as it gives us a more intuitive and easy knowledge of celestial things, will raise our desires after knowledge. For it was this beauty of the heavens, as seen even here upon earth, which gave birth to that national and hereditary philosophy (as Theophrastus calls it), which was thus excited to a desire of knowledge. But those persons will in a most especial degree enjoy this philosophy, who, while they were only inhabitants of this world and enveloped in darkness, were still desirous of looking into these things with the eye of their mind.
XX. For if those men now think that they have attain-
