For me, the final two paragraphs of A New Culture of Learning were the most compelling.
The moment of fusion between unlimited resources and a bounded environment creates a space that does not simply allow for imagination, it requires it. Only when we care about experimentation, play and questions more than efficiency, outcomes, and answers do we have a space that is truly open to the imagination.
And where imaginations play, learning happens.
John Hagel has an excellent review of the book here.