In his most recent book, “Impasse: Climate Change and the Limits of Progress,” Scranton, an associate professor of English, defines the impasse he sees as “not only political and institutional, but cognitive, existential and narrative” and asserts that the only path forward is through embracing what he terms ethical pessimism. “A lot of people confuse pessimism with nihilism, apathy and despair,” Scranton said. “But pessimism is actually about recognizing our limits, letting go ...