Richard D. Wolff

I've been reading "Naked Economics: Undressing the Dismal Science" by Charles Wheelan, as an introduction to the basics of current economic thought. While it's a valuable read to understand standard thinking about economics (written specifically for the absolute layman) it seems to derive utterly from opinions about the functioning of society which I feel are limiting and overly conservative. Is there a similar book you might recommend that endeavors to 'teach' economic theory to the absolute layman, but which does so with a more democratic socialist bent (and, preferably, focused on the importance of maintaining a sustainable ecosystem as well?) Thanks!