For those too young to recall that clear September day, it is hard to describe the mix of feelings we experienced. There was horror at the scale -- there was horror at the scale of destruction, and awe at the bravery and kindness that rose to meet it. There was shock at the audacity -- audacity of evil -- and gratitude for the heroism and decency that opposed it. In the sacrifice of the first responders, in the mutual aid of strangers, in the solidarity of grief and grace, the actions of an enemy revealed the spirit of a people. And we were proud of our wounded nation.