Mark Twain 
A Connecticut Yankee in King Arthur’s Court [EPUB ebook] 

It was in Warwick Castle that I came across the curious stranger whom I am going to talk about. He attracted me by three things: his candid simplicity, his marvelous familiarity with ancient armor, and the restfulness of his company—for he did all the talking. We fell together, as modest people will, in the tail of the herd that was being shown through, and he at once began to say things which interested me. As he talked along, softly, pleasantly, flowingly, he seemed to drift away imperceptibly out of this world and time, and into some remote era and old forgotten country; and so he gradually wove such a spell about me that I seemed to move among the specters and shadows and dust and mold of a gray antiquity, holding speech with a relic of it! Exactly as I would speak of my nearest personal friends or enemies, or my most familiar neighbors, he spoke of Sir Bedivere, Sir Bors de Ganis, Sir Launcelot of the Lake, Sir Galahad, and all the other great names of the Table Round—and how old, old, unspeakably old and faded and dry and musty and ancient he came to look as he went on! Presently he turned to me and said, just as one might speak of the weather, or any other common matter—
“You know about transmigration of souls; do you know about transposition of epochs—and bodies?”