I have been a bit slow to mention the publication of a wonderful new book by Jacqueline Novogratz, founder of the Acumen Fund. The Blue Sweater is the story of the work that Jacqueline has been doing for the last twenty years in Africa, India and Pakistan.

There are many messages that the book has to offer - the power of optimism, the precariousness of many development initiatives, the extreme challenge of truly understanding the needs of the poor. For me the most powerful lesson was one of leadership, in particular the leadership of women trying to change their own lives and the lives of those around them.

This is an inspirational book that shows it is possible to create real change in the world.