Sigrid Nunez’s memoir "Sempre Susan" explores her close friendship with the influential writer Susan Sontag. Through personal anecdotes and reflections, Nunez reveals Sontag's complex character, her passion for literature, and her insatiable curiosity about the human condition. The narrative dives into their discussions about art, life, and the world, highlighting Sontag’s relentless pursuit of knowledge as well as her intellectual rigor.

An intriguing quote from Socrates, "I'm a lover of learning, and trees and open country won't teach me anything," resonates with the themes in Nunez's memoir. It reflects Sontag’s belief in the importance of rigorous thought and intellectual engagement over passive observation of nature. Nunez's portrayal of Sontag emphasizes that true learning often comes from deep dialogue and exploration of ideas rather than mere exposure to the environment.