Chicago (CNN)Popular but politically humbled, President Barack Obama said goodbye to the nation Tuesday night, declaring during his farewell address that he hadn't abandoned his vision of progressive change. "This is where I learned that change only happens when ordinary people get involved, get engaged, and come together to demand it," Obama said from a packed hall of supporters in his adopted hometown. As he spoke before a rowdy crowd of supporters, Obama was interrupted often with screams of "I Love you Obama." When a protester holding a "Pardon All of Us" sign, chants of "four more years" drowned out the shouts. Obama sought to corral his crowd, listing the accomplishments of the last eight years ranging from health care to marriage equality while insisting that his work isn't finished.