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Here is a link to a website that carried Paul Hawken's Commencement Address to the Class of 2009 at the University of Portland. It is practical, and poetic and ponderful and all at the same time. I recommend that you read it. I guarantee it will engage you....
OK so "ponderful" is not a word, but after reading Hawken's address, it should be.
(Hat tip to @Parker Hogan, @AllieW and @Mike Soron for the lead to the link)