After a bristly beginning (JLR: "I won't say thank you for that insulting introduction"), guest and host settle down for a serious debate on the best way to protect our national security. JLR: "The method of checking on everybody in the hope of getting the spies doesn't work. A Harvard professor, a physicist, said it better than I can.... He said, 'When you watch diamond rings and toothbrushes with the same intensity, it's true that you lose less toothbrushes, but you lose a lot more diamond rings.' ... Let's take the Rosenbergs. There's a perfectly good case. [J. Edgar] Hoover had leads that would have led him to the Rosenbergs years earlier, but [the FBI] had so much material, they could never get to it."