'I have got hold of the earliest and most precious book extant. It was written before the world began. The text is easy enough to read; but the notes, which are very copious and numerous, are in such minute and obscure characters that I cannot make them out. I want you to get for me the spectacles which Swedenborg used to wear; not the smaller pair--those he gave to Hans Christian Andersen--but the large pair, and these seem to have got mislaid. I think they are Spinoza's make. You know, he was an optical-glass maker by profession, and the best we ever had. See if you can get them for me.' When I looked up after reading this letter I saw the postman hastening away across the sands, and I cried out to him, 'Stop! how am I to send the answer? Will you not wait for it?' He looked round, stopped, and came back to me. 'I have the answer here,' he said, tapping his letter-bag, 'and I shall deliver it immediately.' 'How can you have the answer before I have written it?' I asked. 'You are making a mistake.' 'No,' he said. 'In the city from which I come the replies are all written at the office, and sent out with the letters themselves. Your reply is in my bag.' 'Let me see it,' I said. He took another letter from his wallet, and gave it to me. I opened it, and read, in my own handwriting, this answer, addressed to you: 'The spectacles you want can be bought in London; but you will not be able to use them at once, for they have not been worn for many years, and they sadly want cleaning. This you will not be able to do yourself in London, because it is too dark there to see well, and because your fingers are not small enough to clean them properly. Bring them here to me, and I will do it for you.' I gave this letter back to the postman. He smiled and nodded at me; and then I perceived, to my astonishment, that he wore a camel's-hair tunic round his waist. I had been on the point of addressing him--I know not why--as Hermes. But I now saw that he must be John the Baptist; and in my fright at having spoken to so great a Saint I awoke.