Who you are, where you've been and what you've done is all up here, captured and preserved in your memories. If you lost that - the story of your own origins - you'd lose your identity, your sense of self.
Neil deGrasse TysonRight now people think God is dark energy and dark matter, the spirit. Go ahead and think that, but the day we can tell you exactly what it is - that it's gremlins in the vacuum of space or whatever - then what's your recourse at that point?
Neil deGrasse TysonLots of people think, well, we're humans; we're the most intelligent and accomplished species; we're in charge. Bacteria may have a different outlook: more bacteria live and work in one linear centimeter of your lower colon than all the humans who have ever lived. That's what's going on in your digestive tract right now. Are we in charge, or are we simply hosts for bacteria? It all depends on your outlook.
Neil deGrasse TysonThe center line of science literacy - which not many people tell you, but I feel this strongly, and I will go to my grave making this point - is how you think.
Neil deGrasse Tyson