Passionate and gracefully outspoken, former PEN President Susan Sontag was one of the most important literary and political thinkers of her generation. Four experts, each of whom was inspired by Sontag, consider her inspiring life and towering work and its lasting impact today: Nancy Kates, director-producer of the documentary film Regarding Susan Sontag; cultural critic Wayne Koestenbaum; Sigrid Nunez, who penned the memoir Sempre Susan; and Moe Angelos, who wrote and performed the critically acclaimed one-woman play Sontag: Reborn.