WASHINGTON, D.C. — The presidency is bigger than any one person, President Obama said Wednesday, adding that "we are all rooting" for President-elect Donald Trump to be successful.

Obama said he could not be prouder of former secretary of State Hillary Clinton, the Democratic nominee for president who lost to Trump. Obama and Vice President Biden addressed the nation from the White House Rose Garden.

"We are all on one team," Obama said. "We're Americans first. We're patriots first."

Video: Obama 'heartened' after talking to Trump

The president said he was heartened by Trump's remarks early Wednesday morning, and that he hoped to move ahead in that spirit.

"It is no secret the president-elect and I have some significant differences," Obama said. But so did he and former President George W. Bush, and the Bush administration made the transition from one administration to the next extremely smooth.

Obama and Trump are expected to meet Thursday at the White House to discuss the transition.

White House Press Secretary Josh Earnest provided few details of Obama's phone call with the president-elect, other than to say he called from the White House residence in the early morning hours.

Obama also called Clinton and "expressed admiration for the strong campaign she waged throughout the country," he said.