Keynote address to the Global Landscape Forum on investment in London in June 2015 by James Cameron, Chairman of the Overseas Development Institute. Mr. Cameron is himself an investor in sustainable farming in Tanzania. In this video, he makes the case for not only arguing with facts, the element called “reason”, but using a language that resonates with people, the element of “love”. And, last but not least, one also has to make the message heard through “power”, of course.