I was driving a two-hour commute to teach a college class. I listened to the news on the radio. At one point I had to pull over on the side of the road just to catch my breath. Later, I passed others who had done the same. When I got to school, I spent half an hour trying to figure out how to break the news to my students, because none of them had heard yet. I canceled the day’s lessons. I told them they could leave to call family or friends if they needed to, or they could stay and talk about how they were feeling. I asked them to try and not react with anger, because it was almost certainly anger that caused the attacks in the first place. Nine years later, I am still asking people to remember that.