Sam Altman was a force to be reckoned with as the president of Y Combinator. Little has changed in his transition to CEO of OpenAI, a "capped-profit" company whose mission it is to "enact a path to safe artificial general intelligence." We talked at length about his work, OpenAI's mission, and some of the criticisms that the young outfit is facing. We had fun, talking with him for this extended sit-down; hope you'll enjoy it, too.