Greek Treatise on Eternity

Found in the library of the Duchess Anna Ivanovna, it's in Greek:

Only the persons of the trinity be truly eternal, of course, for they alone did have no beginning and will have no end. But in Euclid we do learn that there is not merely the unbeginning, unending line, but also a ray, which hath a beginning but lacketh an ending. So there may be creatures who once were not, but shall be ever, for they liveth until the final day. The great Beasts of Job may be among them, but also men, or those with the semblance of men, for some may be angels or devils. Of these I can name seven, although the world is a wide world and there may be twelve or forty, or some number of others. Known to me are: Cain, Admetus, Despuare, Georgius Virens, Ahasuerus, Nicholas of Myra, and Evelake. And the ten thousand souls of men, which are also eternal.