Charles Eisenstein is the author of Sacred Economics, The Yoga of Eating, The Ascent of Humanity, and The More Beautiful World Our Hearts Know is Possible.
His work is primarily focused on questioning the established institutions of our society. He believes that most of the problems, if not all, with the economy, the environment, and our lack of community can be traced back to how we view ourselves as separate from nature and the people around us. And sometimes these institutions help to exacerbate this perceived gap.
You can find more information about him and his work on his website.