I have only slightly to change my focus at any time, to find myself in your world. That I cannot be seen there with the naked eye is no proof that I am not there. Without that change of focus, which is done through an action of will and by knowing the method, I might even be occupying the same space as something in your world and not know it. Note well this point, for it is only half of something which I have to say. The other half is, that you also may at any time be--so far as space is concerned--in the immediate neighbourhood of interesting things in our world, and not know that you are there. But if you focus to this world you are more or less conscious of it. So when I, knowing how, focus to your world, I am there in consciousness and can enjoy the varied sights of many cities, the changing aspects of many lands. When I first came out I could not see my way about the earth very well, but now I can see better. No, I am not going to give you a formula to give to other people by which you or they could change focus at will and enter into relation with this world, because such knowledge at the present stage of human progress would do more harm than good. I merely state the fact, and leave the application for those who have the curiosity and the ability to demonstrate it. My object in writing these letters is primarily to convince a few persons--to strengthen their certainty in the fact of immortality, or the survival of the soul after the bodily change which is called death. Many think they believe who are not certain whether they believe or not. If I can make my presence as a living and vital entity felt in these letters, it will have the effect of strengthening the belief of certain persons in the doctrine of immortality. This is a materialistic age. A large percentage of men and women have no real interest in the life beyond the grave. But they will all have to come out here sooner or later, and perhaps a few will find the change easier, the journey less formidable, by reason of what I shall have taught them. Is it not worth while? Is it not worth a little effort on your part as well as on mine? Any person approaching the great change who shall seriously study these letters and lay their principles to heart, and who shall will to remember them after passing out, need not fear anything. We all fail in much that we undertake, but I hope I shall not fail in this. Do not you fail on your side. I could not do this work without you, nor could you do it without me. That is in answer to the supposition that I am your subconscious mind. I have been in Constantinople and have stood in the very room where I once had a remarkable experience, hundreds of years ago. I have seen the walls, I have touched them, I have read the etheric records of their history, and my own history in connection therewith.