The French-born Tibetan Buddhist monk Matthieu Ricard gave up molecular genetics almost 50 years ago to dedicate himself fully to Buddhist practice. Dubbed “the happiest man in the world,” he’s since authored several books from Shechen Monastery in Nepal, the most recent being Altruism: The Power of Compassion to Change Yourself and the World, published by Little, Brown and Company in June.  

In this wide-ranging, 30-minute interview filmed during Ricard’s most recent visit to New York, contributing editor Joan Duncan Oliver speaks to Ricard about some of the most pressing issues currently facing humanity—climate change, species extinction, and inequality—and how altruism can solve them. —Eds.