American Prometheus

by Kai Bird

Einstein eventually acquired a grudging respect for the new director, whom he described as an “unusually capable man of many-sided education.” But what he admired about Oppenheimer was the man, not his physics. Still, Einstein would never count Oppenheimer as one of his close friends, “perhaps partly because our scientific opinions are fairly diametrically different.” Back in the 1930s, Oppie had once called Einstein “completely cuckoo” for his stubborn refusal to accept quantum theory. All of the young physicists Oppenheimer brought to Princeton were wholly convinced of Bohr’s quantum views—and uninterested in the questions that Einstein posed to challenge the quantum view of the world. They could not fathom why the great man was working indefatigably to develop a “unified field theory” to replace what he saw as the inconsistencies of quantum theory. It was lonely work, and yet he was still quite satisfied to defend “the good Lord against the suggestion that he continuously rolls the dice”—his thumbnail critique of Heisenberg’s uncertainty principle, one of the foundations of quantum physics. And he didn’t mind that most of his Princeton colleagues “see me as a heretic and a reactionary who has, as it were, outlived himself.”