A self-assured President Barack Obama on Monday used his second inaugural address to lay out a bold liberal vision of the American future, drawing direct links between the origins of the republic and some of the most vexing political issues of the day.

The usual inauguration choreography of prayers and poems and crowds became a powerful demonstration of history's arc: The first African-American president was taking his second oath of office on a day named for the Rev. Martin Luther King Jr. on the Mall where King thundered almost 50 years ago about the United States' unfulfilled promise.

On a day when the president was at times confident and wistful, solemn and jubilant, he called on the American people to join him in creating a new nation grounded in the old ideas of equality and opportunity.