Terry Gross

Keegan spent his life studying war, but he never fought in one and described himself as more or less a pacifist. The British military historian, who died last week at age 78, chronicled the history of warfare from Alexander the Great to the U.S. invasion of Iraq.

Norris plays DEA agent Hank Schrader in the AMC series about a chemistry teacher turned meth cook. "He's a good cop, he just hasn't put the pieces together yet," Norris says.

We listen back to excerpts of interviews with the acerbic writer, who died Tuesday at 86. Vidal authored the historical novels Burr and Lincoln, wrote plays and provocative essays, ran for office twice — and lost — and frequently appeared on TV talk shows.