Good power, Bad Power

"In my book, there's good power and bad power - you need the former to combat the latter"

That's Duncan Green's answer*, elegant and succinct,  to my query about the title of his very popular development blog  "From poverty to Power". (He. has a book by the same name). I want to hear your thoughts on that title and Duncan's reasons for it. Post a comment by clicking "comment" at the bottom of this page. (I'll give my view in the next post) 

* I asked Duncan about quoting him.