You'd probably have to throw in Mary Shelly, Lord Byron, Mark Twain, C S Lewis, Arthur C Clarke, Aldous Huxley and a few others if we're talking about visionaries.
Who can we look to today for a glimps into mans future and his soul?
This is a scene from Dante's Divine Comedy, Hell, Canto V, 37-138, 1824-27 Pen and ink and water colour, City Museum and Art Gallery, Birmingham.
If Dan Brown is your answer, then we are in civilisational descent.
I can already feel my big toe turning into a thumb.