WASHINGTON -- President-elect Barack Obama says "Anything is possible in America."
He addressed tens of thousands at a pre-inauguration concert at the Lincoln Memorial Sunday.
Obama said the challenges facing the country will not be easy and will likely take many years to turn it around.
But he said he's as hopeful as ever that the country will endure and that the dreams of the founders will live on in our time.
Harking back to Martin Luther King Jr's "I Have a Dream" speech, Obama noted the pool that "still reflects the dream of a King, and the glory of a people who marched and bled so that their children might be judged by their character's content."
And with a bow to Abraham Lincoln, he said "behind me, watching over the union he saved, sits the man who in so many ways made this day possible."
Looking in front of him to the Washington Monument, he spoke of George Washington who "led a small band of farmers and shopkeepers in revolution against the army of an Empire."
He honored all those who built the country, and fought and died in its wars.