Twitter Inc. co-founder dropped out of college—twice, from Northeastern University and the University of Massachusetts, Boston—yet this fall he'll be advising M.B.A. students at the University of California at Berkeley's Haas School of Business on topics such as entrepreneurship and innovation.

In an interview with The Wall Street Journal, Mr. Stone, who left day-to-day operations at the microblogging service in June but is still an adviser, discusses teaching creativity and entrepreneurship. (Mr. Stone will serve as an...