Nah, the lust for power thing was reading a bit to much into that quote, I admit.
"Conquer the word". No, I don't think he thought in those terms. Still, do you think he would have just stop making conquests if he had managed to defeat Russia and GB? I suspect he would have found Europe to small and gone for the East in another series of wars. Of course, such things cant be proved. Convince me that I'm wrong!