The media need superheroes in science just as in every sphere of life, but there is really a continuous range of abilities with no clear dividing line.
Stephen HawkingThere is a very real danger that we will kill everything on this planet now that we have the technological power to do so.
Stephen HawkingAny physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory.
Stephen Hawking