Doppelgänger

Definition and stakes

Dorothy Scarborough,  Humorous Ghost Stories

“ It reminds me of those persons who have had doubles, and I suppose a man would often be very angry indeed when he found that there was another being who was personating himself.”
“Oh! the cases are not similar at all,” said the ghost. “A double or doppelgänger lives on the earth with a man; and, being exactly like him, he makes all sorts of trouble, of course. It is very different with me. I am not here to live with Mr. Hinckman. I am here to take his place. Now, it would make John Hinckman very angry if he knew that.
”
Source: Gutenberg

Dorothy Scarborough,  The Supernatural in Modern English Fiction

“ The double, a frequent figure in English fiction, bears a resemblance to the Doppelgänger of German folk-tales. Numerous examples of dual personality, of one being appearing in two forms, are seen, with different twists to the idea, yet much alike. It has been suggested that these stories have their germinal origin in Calderon’s play, [134] where a man is haunted by himself. Poe’s William Wilson is a tense and tragic story of a man pursued by his double, till in desperation he kills him, only to realize that he has slain his better self, his conscience. ”
Source: Gutenberg

Portrait of Francis Galton Francis Galton,  Popular Science Monthly (1875)

“ We have seen that a few twins retain their close resemblance through life; in other words, instances do exist of thorough similarity of nature, and in these external circumstances do not create dissimilarity. Therefore, in those cases, where there is a growing diversity, and where no external cause can be assigned, either by the twins themselves or by their family for it, we may feel sure that it must be chiefly or altogether due to a want of thorough similarity in their nature. ”
Source: Wikisource

Get perspective with Kwize: daily news enlightened by great literature