September 11th, 2001 was a terrible day. Ten years later, it is being remembered all across the country (and, one hopes, across much of the world). This is as it should be. We must never forget the human-on-human acts of violence that have littered our history. But we must also learn from them. Let's hope that today, while we bow our heads in memory of horrid events and of lives lost, we also remember the lessons from that dark day.