“Even the smallest act of service, the simplest act of kindness, is a way to honor those we lost, a way to reclaim that spirit of unity that followed 9/11.” — President Obama in a 2011 radio address “If we learn nothing else from this tragedy, we learn that life is short and there is no time for hate.” — Sandy Dahl , wife of Flight 93 pilot Jason Dahl , in Shanksville, Pa., in 2002