Here are a few quotes from the Afterword:
...a battle for America's security became, and continues to be, a battle for the country's soul.
... the Bush Administration was warned that the short-term benefits of its extralegal approach to fighting terrorism would have tragically destructive long-term consequences both for the rule of law and America's interests in the world.
... the Bush Administration invoked the fear flowing from the attacks on September 11 to institute a policy of deliberate cruelty that would have been unthinkable on September 10.
... President Bush and Vice President Cheney have continued to insist that they never authorized or condoned "torture," which they acknowledge is criminal under U.S. law. But their semantic parsing of the term began to seem increasingly disingenuous as details from the secret detention and interrogation program surfaced, piece by piece.