Whilst perusing the interwebs I've come upon some interesting quotes and references that are apropos of the day:
Debunking 9/11 Myths: Why Conspiracy Theories Can't Stand Up to the Facts
Lee Harris: The Enemy is someone who is willing to die in order to kill you. And while it is true that the Enemy always hates us for a reason — it is his reason, and not ours.
Mark Steyn: From "Let's Roll!" to "Let's Roll Over."
I'll add more if I find any that interest me.