I love these RSA animated lectures. This one by Dan Pink on his new book, Drive: the surprising truth about what motivates us.
I especially like the idea of the purpose motive, and the caveat about unmooring the profit motive from it. If someone does come up with a way to keep organizations anchored in the purpose motive, I think that would make the world a better place.
If you haven’t read it, I fervently recommend Albert Hirschman’s essay “The Concept of Interest.” It was collected in his book _Rival views of market society and other recent essays_.