I have a very good friend who has the most sweet calm voice, that even when she has just ripped you a "new one". Well, not me, per say, but I have been present for her calm confrontation a time or two, interestingly enough, these people have no idea the magnitude of what was said to them, until they have walked away. I can figure about 15 minutes later, when it sinks in, they realize that they have been reprimanded and she is long gone. I only wish I had such a way about me.
We all learn from the best, don't we?