Here is a recent reflection.
The notion that power is in and of itself not evil and that we can have power as long as we use it properly sounds good (and indeed is quite right). But the problem is that when we are in a position of power we can hardly understand what it is like to be powerless. (Or if we have experienced powerlessness before, we can quite easily forget about what it is like if we now have a lot of power.) This in turn means that we probably don't know how to use power properly. Paul's resolve to boast in his weakness in 2 Corinthians has much to say to us today.