When thinking about September 11, 2001 there's all the usual stuff. Where were you, what were you doing? How has the country changed, how is everything terrible now? Never forget. Yes yes, all those things.
Things I hope I don't forget. How clear and quiet and alien the sky was with no airplanes.
How evil I became. How the first things I could think to say were from Shakespeare:
"Cry 'Havoc' and let slip the dogs of war
That this foul deed shall smell above the earth
With carrion men, groaning for burial."
How killing was my first and only thought. How quickly revenge and ruthlessness consumed me. What merciless, truly terrible thoughts I entertained.
The evil in the world isn't something out there. It is in us and of us. We cannot extinguish it elsewhere without understanding it in our own hearts.