Steven Weinberg is Josey Regental Professor of Science at the University of Texas. His research has been honored with numerous prizes and awards, including in 1979 the Nobel Prize in Physics and in 1991 the National Medal of Science, as well as the Heinemann Prize in Mathematical Physics and the Madison Medal of Princeton University. He has been elected to the US National Academy of Sciences, the Royal Society of Great Britain, the American Philosophical Society, and the American Academy of Arts and Sciences.