Symmetry principles are principles governing the laws of nature that say those laws look the same if you change your point of view in certain ways.

If we had the fundamental laws of nature tomorrow, we still wouldn't understand consciousness. We wouldn't even understand turbulence.

Certainly science, because of its ability to increase our capacities to do things, raises terrible risks for us all. If it were possible to undiscover nuclear fission, I would be very happy to undiscover it, because of the risks that it puts us all under.

I was born in 1933 in New York City to Frederick and Eva Weinberg. My early inclination toward science received encouragement from my father, and by the time I was 15 or 16, my interests had focused on theoretical physics.

My work during the 1970s has been mainly concerned with the implications of the unified theory of weak and electromagnetic interactions, with the development of the related theory of strong interactions known as quantum chromodynamics, and with steps toward the unification of all interactions.