We are in danger of destroying ourselves by our greed and stupidity. We cannot remain looking inwards at ourselves on a small and increasingly polluted and overcrowded planet.
Stephen HawkingIf the total energy of the universe must always remain zero, and it costs energy to create a body, how can a whole universe be created from nothing?
Stephen HawkingScience can lift people out of poverty and cure disease. That, in turn, will reduce civil unrest.
Stephen HawkingThis required abandoning the idea that there is a universal quantity called time that all clocks measure. Instead, everyone would have his own personal time. The clocks of two people would agree if they were at rest with respect to each other but not if they were moving. This has been confirmed by a number of experiments, including one in which an extremely accurate timepiece was flown around the world and then compared with one that had stayed in place. If you wanted to live longer, you could keep flying to the east so the speed of the plane added to the earth
Stephen Hawking