Barack Obama spoke at the University of Chicago Monday in his first public appearance since leaving office. He kicked it off by asking the audience: "So, uh, what's been going on while I've been gone?"

His big picture: After a lot of contemplation he's decided his next job should be to "prepare the next generation of leaders."

• Marriage advice: "Just a tip for all you young folks... listening to understand not listening to respond — that'll save you a lot of heartache and grief."
• "I probably wouldn't have been President" said Obama, if photos of him from high school were subject to the type of social media scrutiny that exists today. He warned: "Be careful with those selfies."
• "I'm old... but please, continue," he interjected when a panelist noted that he was in 8th grade during Obama's first presidential election.