Some themes of former vice president Joe Biden’s campaign for the White House began to come into focus at a weekend rally in Philadelphia.

One such theme revolves around Biden, easily the front-runner of a crowded pack seeking the nomination for president, making an appeal for unity. Biden said that he doesn’t believe Democrats need to be “angry” to win the nomination.

“Folks, I know some of the really smart folks say Democrats don’t want to hear about unity. They say Democrats are so angry, that the angrier a candidate can be, the better chance he or she has to win the Democratic nomination. Well, I don’t believe it. I really don’t. If Democrats — I believe Democrats want to unify this nation, that’s what our party has always been about,” Biden said to cheers and applause. “That’s what it’s always been about, unity. If the American people want a president to add to our division, lead with a clenched fist, a closed hand, a hard heart, to demonize your opponents, to spew hatred, they don’t need me, they’ve got President Donald Trump.”

That didn’t mean Biden was above taking a swipe at Trump for taking credit for the condition of the US economy, which recently registered the lowest unemployment rate in half a century.

“One more aside. I know President Trump likes to take credit for the economy and economic growth and low unemployment numbers. But just look at the facts, not the alternative facts. President Trump inherited an economy from Obama-Biden administration that was given to him. Just like he inherited everything else in his life,” Biden said to more cheering and applause. “And just like everything else he’s been given in his life, he’s in the process of squandering that as well.”