The quality of everlastingness belongs, as we have seen, to a single correspondence, or rather to a single set of correspondences. But it is apparent that before this correspondence can take full and final effect a further process is necessary. By some means it must be separated from all the other correspondences of the organism which do not share its peculiar quality. In this life it is restrained by these other correspondences. They may contribute to it, or hinder it; but they are essentially of a different order. They belong not to Eternity but to Time, and to this present world; and, unless some provision is made for dealing with them, they will detain the aspiring organism in this present world till Time is ended. Of course, in a sense, all that belongs to Time belongs also to Eternity; but these lower correspondences are in their nature unfitted for an Eternal Life. Even if they were perfect in their relation to their Environment, they would still not be Eternal. However opposed, apparently, to the scientific definition of Eternal Life, it is yet true that perfect correspondence with Environment is not Eternal Life. A very important word in the complete definition is, in this sentence, omitted. On that word it has not been necessary hitherto, and for obvious reasons, to place any emphasis, but when we come to deal with false pretenders to Immortality we must return to it. Were the definition complete as it stands, it might, with the permission of the psycho-physiologist, guarantee the Immortality of every living thing. In the dog, for instance, the material framework giving way at death might leave the released canine spirit still free to inhabit the old Environment. And so with every creature which had ever established a conscious relation with surrounding things. Now the difficulty in framing a theory of Eternal Life has been to construct one which will exclude the brute creation, drawing the line rigidly at man, or at least somewhere within the human race. Not that we need object to the Immortality of the dog, or of the whole inferior creation. Nor that we need refuse a place to any intelligible speculation which would people the earth to-day with the invisible forms of all things that have ever lived. Only we still insist that this is not Eternal Life. And why? Because their Environment is not Eternal. Their correspondence, however firmly established, is established with that which shall pass away. An Eternal Life demands an Eternal Environment.