The Hoover Institution hosted its annual Spring Retreat beginning on Sunday, April 21, 2013, with before-dinner remarks by Kevin Warsh, a distinguished visiting fellow at the Hoover Institution and a lecturer at the Stanford Graduate School of Business. His speech, titled “The Economy over the Horizon: Unknown Knowns,” emphasized the importance of the state of the economy, which currently has a 2 percent growth rate, and understanding the concept of “unknown knowns,” a reference to former secretary of defense Donald Rumsfeld.