On Sheep, Sheepdogs and Wolves

I have often used the analogy in personal conversation, teaching self-defense classes, and sometimes alluded to it on this blog (here, here, here, and here).  But Lt. Col. Dave Grossman, U.S. Army (Ret.) spells it out better on this page than anyone else I have seen.

Thanks to someone at work for pointing this page out to me.