Mark Twain? Lord Byron? G. K. Chesterton? Edward Bellamy? Humphrey Bogart? Leo Rosten? Tom Clancy? Dear Quote Investigator: There is a wonderful quotation by Mark Twain about the implausibility of truth versus fiction. Here are four versions: 1) Why shouldn’t truth be stranger than fiction? Fiction, after all, has to make sense. 2) It’s no …