Billions and Billions Author:Carl Sagan From the Epilogue of Billions and Billions: — "I sit surrounded by cartons of mail from people all over the planet who mourn Carl's loss. Many of them credit him with their awakenings. Some of the say that Carl's example has imspred them to work for science and reason..." — This book bears the ISBN of 0679411607, which PBS lists as a hardcover. It... more » is a paperback, though, so I have listed it without it's ISBN so as to avoid confusion.« less