Excerpts from Books and Wikipedia
"The plan was for Martin Luther King Jr. and the other leaders, six black and for what to walk to the Lincoln Memorial at the head of the marchers. . . . at the last moment King threw away his prepared remarks and spoke to the demonstrators impromptu. His repeated theme was 'I have a dream,' which was cheered to the echo at each repetition by the huge crowd. 'I say to you today, my friends, so even though we face the difficulties of today and tomorrow, I still have a dream. It is a dream deeply rooted in the American dream. I have a dream that one day this nation will rise up and live out the true meaning of its creed--we hold these truths to be self-evident, that all men are created equal.'" [Furtado: 1001 Days]