Bertrand Russell used to employ the method of "evidence against interest"; in other words of deciding that a critique of capital punishment, say, carried more weight if it came from a prison governor. (My friend John O'Sullivan puts it like this: If the pope says he believes in God, he's only doing his job; if he says he doesn't believe in God, he may be on to something.)
Christopher HitchensI was brought up in a very naval, military, and conservative background. My father and his friends had very typical opinions of the British middle class - lower-middle class actually - after the war. My father broke into the middle class by joining the navy. I was the first member of my family ever to go to private school or even to university. So, the armed forces had been upward mobility for him.
Christopher Hitchens