A crackling exchange with a guest who, before he went into politics, had been one of the country's leading litigators. Although on the left side of the Democratic Party, Mayor Alioto is forthright in asserting the need for order (in the face, specifically, of student disruptions). He will not budge from his unconditional support for labor unions, but the level of discourse is not what one hears every day from politicians: JA: "... if you give people enough time to talk about their differences, enough time to know the facts, all of those things happen, I think ..." WFB: "Your faith is of Platonic interest to me, and I would say ..." JA: "This is a very realistic, Aristotelian type of faith that I'm talking about--not a faith in ideas, but a faith in the realities of things."