Leader said that your gifts are your greatest weapon. I think that is one of the lessons that Lois Lowry was trying to get across. Throughout the story everyone was getting meaner and did not care for others because of trade. I believe that she is trying to say that, in our world people are getting to greedy and are not caring as much for each other because of money and things like that.
The only other book I have read by Lois Lowry was The Giver. I enjoyed the Messenger better than The Giver. I think the Messenger has a better ending. The Giver ends with the main character, Jonas, trying to find a better place to live, riding on a red sleigh in the snow. the author let's the reader decide whether or not he makes it. Well, in the Messenger, Lois Lowry makes it clear that Jonas did make it because Leader, whose name is Jonas, founded Village, traveling on a red sleigh. Both Jonas in The Giver and Jonas in the Messenger have the gift to "see beyond".