That's what is INCREDIBLE about human BEINGS, is the CHOICE to keep going.
This idea of how EVERYTHING is INTERCONNECTED, and the impermanence of things.. It sums up the human CONDITION to me, and it HELPS me on my path.
We're going to be focusing our science on things that will take us farther and longer into SPACE. For MANY of those EXPERIMENTS, the crew members are human guinea pigs, which is fine; that's part of my JOB. I don't mind being a human guinea pig.
A HUMAN being is so IRREPLACEABLE. So VALUABLE and so UNIQUE.