Indeed, the whole human species is endangered, by nuclear weapons or by other means of wholesale destruction which further advances in science are likely to produce. – Joseph Rotblat

At a time when science plays such a powerful role in the life of society, when the destiny of the whole of mankind may hinge on the results of scientific research, it is incumbent on all scientists to be fully conscious of that role, and conduct themselves accordingly. – Joseph Rotblat

I did not imagine that the second half of my life would be spent on efforts to avert a mortal danger to humanity created by science. – Joseph Rotblat