It's fascinating to me that, despite all of humanity's incredible progress over the last few thousand years, so many profound mysteries about the nature of reality remain. Below is my list of what I see as the deepest mysteries.  What would you add to the list? — LIST OF DEEP MYSTERIES ABOUT THE NATURE OF REALITY — 1. THE UNIVERSE 1.1 Eternity - Will our universe last forever? If it won't, what will the end of the universe be like (e.g., a new big bang, a big crun...