If the scientific gropers-in-the-dark were allowed fully to explore, and their political masters to exploit, the atom until all its energy were released, our Earth would either blow up into pieces and all mankind with it, or else have its atmosphere so poisoned by radioactivity as to make any life within it impossible. But it is not in the World-Mind's World-Idea that this shall be allowed. The so-called progress of man in this direction will be arrested. He will be allowed to injure himself, since he insists on playing with these dangerous forces, but not to destroy himself.
-- Notebooks Category 11: The Negatives > Chapter 3: Their Presence in The World > # 86