You didn't think people would take it seriously? That quote is pretty basic and sums up his POV about insurgencies and hitting 'soft targets', accidentally or not. That's what many in the Rebel Alliance argued (in-universe). I just liked that quote and loled when McVeigh said it.
I found it on wikipedia on the article about the Oklahoma city bombing. lol I didn't think anyone would take it seriously, I find it hilarious, like he's trying to explain the situation to a 10 year old.