"He has no clue about what makes America great. Actually he has no clue, period," Biden said, as the audience cheered.
"His lack of empathy and compassion can be summed up in the phrase I suspect he’s most proud of having made famous," Biden said.
"Think about everything you learned as a child, no matter where you were raised. How can there be pleasure in saying, 'you’re fired?'"
“Everybody knows she’s smart. Everybody knows she’s tough. But I know what she’s passionate about. I know Hillary. Hillary understands,” he said.
“There’s only one person in this race who will be there. Who’s always been there for you. And that’s Hillary Clinton’s life story,” he added.
Biden also made a bittersweet reference to his son Beau, who placed his name into nomination at the 2012 DNC.
“You got a glimpse of what an incredibly fine man Beau was,” he told the audience.