Célia Abele talks about Wolfgang von Goethe, the French writer Chateaubriand, and the German physicist Georg Lichtenberg. These writers became fascinated in the Alps and volcanoes such as Vesuvius. Abele is an assistant professor of French at Boston College. She’s the author of “Mountain Time: Tense Futures and Present Pasts in the Alps and Vesuvius around 1800.”