In a statement issued by spokesman David Sherzer, the former president said:
"Eight years ago, our nation and our freedom came under attack. On this solemn anniversary, Laura and I hold the victims and their families in our thoughts and prayers. We honor those who volunteer to keep us safe and extend the reach of freedom -- including members of the armed forces, law enforcement officers, and intelligence and homeland security professionals. Their courage, service and sacrifice is a fitting tribute to all those who gave their lives on Sept. 11, 2001. On this day, let us renew our determination to prevent evil from returning to our shores."
Sherzer says the former president would make no public appearances nor give any interviews Friday.