As he ascended the stage in Chicago, the crowds roared "four more years, four more years", even as Obama tried to quiet the very emotional gathering of people who had come to see off the man who finally avenged 9/11, made gay marriage legal and ensured healthcare for all Americans. But today, that man failed to quiet the crowd.
"You can tell I'm a lame duck, because no one is following my instructions," Obama joked, at the start of his address, and followed that up with a big "thank you" to all Americans who gave him a chance to serve as US President.
In his almost-hour long speech, Obama never strayed from one message - that the US democracy is what it is because of its inclusiveness and its promise of equality of economic opportunity for all, regardless of race, religion, gender or sexual identity.
The thrust of the speech couldn't have been clearer, as Americans head into four years of a Trump presidency. Of a Trump who has publicly vilified women, the weak, immigrants and the poor. Of a Trump who was democratically elected.
"In ten days, the world will witness a hallmark of our democracy," Obama said, and that statement's import wasn't lost on the crowd. The reference was obvious. America voted Trump to power, and American democracy must go on. But not without the strictest vigilance to ensure equal rights for all.
"Going forward, we must uphold laws against discrimination - in hiring, in housing, in education and the criminal justice system... we, as citizens, must remain vigilant against external aggression, we must guard against a weakening of the values that make us who we are. That's why I reject discrimination against Muslim Americans. That's why we cannot withdraw from global fights - to expand democracy, and human rights, women's rights, and LGBT rights - no matter how imperfect our efforts, no matter how expedient ignoring such values may seem," Obama said.