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When you have a vision of where you need to go, it sounds utopian. But when you get to the tipping point, your understanding switches.

"We’ll Have a Global Climate Treaty in 2015". Interview with Catherine Brahic, www.slate.com. March 22, 2014.
When you have a vision of where you need to go, it sounds utopian. But when you get to the tipping point, your understanding switches.