Mark Twain, [Samuel Langhorne Clemens] (1835-1910) American author and humorist Share on Facebook Share on Twitter Comment on this quote Share via Email Print this Page Mark Twain Quote “One of the proofs of the immortality of the soul is that myriads have believed in it. They have also believed the world was flat.”Mark Twain ~ Mark Twain [Samuel Langhorne Clemens] (1835-1910) American author and humorist Belief , Religion Ratings and Comments SaveOk2 SaveOk2 View CommentsClick to view or comment. Share on Facebook Tweet Email Print This Mark Twain quote is found in these categories: Belief quotes Religion quotes About Mark Twain Bio of Mark Twain Quotations by Mark Twain Books by/about Mark Twain Mark Twain videos Mark Twain on Wikipedia Astrological chart for Mark Twain