When I first heard of Bhutan’s goal of maximizing its people’s happiness, I wondered if it really meant anything in practice, or was just another political slogan. Last month, when I was in the capital, Thimphu, to speak at a conference on “Economic Development and Happiness,” organized by Prime Minister Jigme Y. Thinley and co-hosted by Jeffrey Sachs, Director of The Earth Institute at Columbia University and Special Adviser to United Nations Secretary-General Ban Ki-moon, I learned that it is much more than a slogan.