Jonathan Greenblatt is a serial social entrepreneur with a string of successes. He has helped to build several brands, including Ethos Water, which was bought by Starbucks in 2005. He also worked with Google and was, until last month, the director of the Office of Social Innovation and Civic Participation at the White House. From July 1 he became the national director of the Anti-Defamation League. Greenblatt was named a senior fellow at the Wharton School in December 2014.