"I think it’s probably a survival skill that we’re curious and like to explore. Our ancestors, who were incurious and failed to explore, probably didn’t live as long as the ones who were looking over the next mountain range to see if there were more sources of food and better climates and so on and so on.
We are really evolved to be pioneers. For good reason. New worlds have a way of — you can’t predict how or why or when — but new worlds have a way of saving old worlds. That’s how it should be. We need the frontier. We need the people moving out into space."