"Yes," he said to himself, as he drew a deep breath of the sweet spring air. "I was right; that's it. The fourth dimension is a form of duration in some way correlated with space. I shall have to work that out in the light of the greater knowledge, which Her vanished Majesty has given me, and which I almost attained to in Egypt. Wherefore, existence in a state of four dimensions, or the world of N4, as I have always called it, is, roughly speaking, one. Time and space are, as it were, two sides of the same shield, and a person living in that world can see both of them at once. Wherefore, past, present, future, length, breadth, thickness, here and there are all the same thing to him. It's a great pity there isn't a fourth dimensional language as well, so that one could state these things a little more precisely. But that, of course, is out of the question. "Really, I can hardly make myself understand it as far as words and phrases are concerned; still, there it is; and now the question arises: Having got this power, as I certainly have, of transferring myself from one existence to another by a mere effort of thought, because it is very evident that this power is really only an extension or an exaltation--confound the language of the third dimension--I can't say it! Although I understand what it is, it won't go into words. What am I to do with it? Its possibilities are, of course, a little appalling--that is to say, from the point of view of N3. I have not the slightest desire to shake the fabric of Society to pieces, as I could do, and still less have I taste for spending the rest of my scientific career in what the world would very easily believe to be conjuring tricks. I hope I am not going to be another of the unnumbered proofs of Solomon's wisdom when he said, 'Whoso getteth knowledge, getteth sorrow.' I wonder what sort of advice Her late Majesty of Egypt---- "Dear me, what nonsense I am talking! Her late Majesty? That won't do at all--she has reached the Higher Plane too, so, of course, she can't be dead----" And then with the force of a powerful electric shock, the terrible fact struck him that, for those who had reached that plane, there was no death! Here was a new light on the weird problem which he had somehow been called upon to deal with. "I wonder what Her Majesty would really think of it?" he murmured, after a few moments of mental bewilderment. "Dear me, who's that?" He looked up, and, to his utter amazement, he saw Queen Nitocris, arrayed exactly as she had been on that terrible night of her bridal with Menkau-Ra, walking towards him; a perfect incarnation of beauty, but----