“This past spring, the philosopher Richard J. Bernstein taught his final two classes at the New School for Social Research, in New York, where he had been a professor since 1989. One was a course on American pragmatism, the tradition to which his own work belongs. The other was a seminar on Hannah Arendt, who, late in her life, was Bernstein’s friend. Years ago, when I got my Ph.D., I was Bernstein’s student. I still am, in a way. And so I asked him if I could audit the class on Arendt and write about it. He said that he didn’t like passive auditors—I would have to participate fully. That requirement struck me as a good description of what Bernstein had done all his life.”