In an emotional farewell address, President Barack Obama challenged Americans to stand up for their values, be open-minded and proactive and have hope for the future.

He called out the flaws of America's democracy, but expressed pride in the progress the country has made.

He addressed first lady Michelle Obama, his daughters and Vice President Joe Biden directly, bringing many, himself included, to tears.

Here are some of the best lines from his speech.

'Democracy can buckle when it gives in to fear'

"Protecting our way of life -- that's not just the job of our military," the president said. "Democracy can buckle when it gives into fear. So just as we, as citizens, must remain vigilant against external aggression, we must guard against a weakening of the values that make us who we are." (Credit: Getty Images North America / Scott Olson)

'Politics is a battle of ideas'

"Politics is a battle of ideas," Obama said. "But without some common baseline of facts, without a willingness to admit new information, and concede that your opponent might be making a fair point, and that science and reason matter, then we're gonna keep talking past each other, and we'll make common ground and compromise impossible." (Credit: Bloomberg News / Christopher Dilts)

'If you’re disappointed by your elected officials ... run for office yourself'

"For all our outward differences, we in fact all share the same proud title, the most important office in a democracy: Citizen," the president said. "That's what our democracy demands. It needs you. Not just when there's an election, not just when your own narrow interest is at stake, but over the full span of a lifetime. If you're tired of arguing with strangers on the Internet, try talking with one of them in real life. If something needs fixing, then lace up your shoes and do some organizing. If you're disappointed by your elected officials, grab a clipboard, get some signatures, and run for office yourself." (Credit: Getty Images / Nicholas Kamm)

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'Each one of us need to try to heed the advice of ... Atticus Finch'

"If our democracy is to work the way it should in this increasingly diverse nation, then each one of us need to try to heed the advice of a great character in American fiction, Atticus Finch, who said, 'You never really understand a person until you consider things from his point of view, until you climb into his skin and walk around in it,'" Obama said. (Credit: Getty Images / Darren Hauck)

'As my mom used to tell me, reality has a way of catching up with you'

"How can elected officials rage about deficits when we propose to spend money on preschool for kids, but not when we're cutting taxes for corporations? How do we excuse ethical lapses in our own party, but pounce when the other party does the same thing?" Obama asked. "It's not just dishonest, this selective sorting of the facts; it's self-defeating. Because as my mom used to tell me, reality has a way of catching up with you." (Credit: Getty Images / Nicholas Kamm)

Michelle 'made the White House a place that belongs to everybody'

"You took on a role you didn't ask for and made it your own with grace and with grit and with style and good humor," the president said to his wife, first lady Michelle Obama, who he called his best friend. "You made the White House a place that belongs to everybody. And a new generation sets its sights higher because it has you as a role model." (Credit: AFP / Getty Images / Nicholas Kamm)

Joe was 'the scrappy kid from Scranton who became Delaware's favorite son'

"To Joe Biden, the scrappy kid from Scranton who became Delaware's favorite son: You were the first decision I made as a nominee, and it was the best," Obama said. "Not just because you have been a great vice president, but because in the bargain, I gained a brother." (Credit: Getty Images North America / Scott Olson)

'I am asking you to believe'

"My fellow Americans, it has been the honor of my life to serve you. I won't stop; in fact, I will be right there with you, as a citizen, for all my remaining days ... I am asking you to believe. Not in my ability to bring about change -- but in yours." (Credit: Getty Images / Darren Hauck)

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'Yes, we can.'

"Yes, we can. Yes, we did. Yes, we can," the president concluded, repeating the catchphrase from his 2008 campaign. (Credit: AFP / Getty Images / Joshua Lott)