“To be successful you have to be selfish, or else you never achieve. And once you get to your highest level, then you have to be unselfish. Stay reachable. Stay in touch. Don't isolate.”
“It is possible that a scientific discovery will be made that humans will later regret because it has awful consequences. The problem is, we probably would not know in advance and, once the discovery is made, it cannot be undiscovered.”