By David Travis
September 9, 2008 -- On the fringe of the green movement, one always hears the following phrases coming from the mainstream with great regularity: "green capitalism", "sustainable capitalism", "social entrepreneurs", "green entrepreneurs", etc. None of these terms tend to mean anything specific, and no one who uses them is in a great hurry to spell out, for example, how a green entrepreneur is different in any fundamental way from some other kind of entrepreneur, or how capitalism could be driven toward sustainability rather than profit. So you can imagine my pleasure at meeting the author of a book called Sustainable Capitalism: A Matter of Common Sense.