Is there such a thing as true silence? “Silence” includes the voices of Pico Iyer, Kay Larson, Christopher Ricks, James Johnson, Damian Carr, Steven Cooper, Bob Celmer, Cecil McBee, and Geoffrey Shugen Arnold. It also includes Brian Calvert’s piece “The Rest is Silence,” which was originally made for KCRW’s Independent Producer Project. Produced by Zack Ezor, Conor Gillies, and Andrea Shea. Editing help from Sean Cole, Katherine Gorman, and Erika Lantz. Artwork by Robert Beatty. From WBUR, Boston’s NPR News Station.