(Update: McKinsey seems to have pulled the whole issue from the web, which is too bad because there was a lot of good stuff in it. The text of my contribution can be found below.)
I have a short essay in a special edition of the McKinsey Quarterly, What Matters. My piece is waaaay back at the end of the printed volume, and all the preceding articles are well worth a look. Other essayists include Steven Chu, Hal Varian, Nicholas Stern, Kim Stanley Robinson, Yochai Benkler, Vinod Khosla, Arianna Huffington, Joseph Nye, and many more. Good company.