Ms. Frost-Knappman was peddling a book that referred to Ms. Sontag, author of such works as On Photography and Illness as Metaphor , as ???the Sybil of Manhattan??? and ???the Kenny G. of literature ??? The authors write of Sontag???s public persona and private passions, including her open love of women, strategies behind her meteoric rise to fame, her political triumphs and missteps.