For how shall he be considered "the first-born of every creature,"  who, after the creation of the earth and the firmament, was formed out of clay? And how shall he be admitted to be "the tree of life" who was cast out for his transgression,  lest "he should again stretch forth his hand and eat of it, and live forever?"  For it is necessary that a thing which is likened unto anything else, should in many respects be similar and analogous to that of which it is the similitude, and not have its constitution opposite and dissimilar. For one who should venture to compare the uneven to the even, or harmony to discord, would not be considered rational. But the even should be compared to that which in its nature is even, although it should be even only in a small measure; and the white to that which in its nature is white, even although it should be very small, and should show but moderately the whiteness by reason of which it is called white. Now, it is beyond all doubt clear to every one, that that which is sinless and incorrupt is even, and harmonious, and bright as wisdom; but that that which is mortal and sinful is uneven and discordant, and cast out as guilty and subject to condemnation.