Ben and I were both captivated by the recent release of the science fiction classic "Dune". Both of us were raised on sci fi, and yet both of us had largely abandoned the field in recent years. Here we have a dia logos on what science fiction (or speculative fiction more broadly) has to teach us about our relationship with the cosmos. Our discussion also entails some necessary discussion of sci fi's nocturnal twin: fantasy. In addition to Dune's author, Frank Herbert, other writers whose work appears are Nancy Kress, John Varley, Ursula K. Le Guin and Ted Chiang.