'Hope is the bedrock of this nation -- the belief that our destiny will not be written for us, but by us, by all those men and women who are not content to settle for the world as it is, who have the courage to remake the world as it should be.'
-- Obama in Des Moines after winning the Iowa Democratic caucuses
'There's something happening when Americans who are young in age and in spirit, who've never participated in politics before, turn out in numbers we have never seen because they know in their hearts that this time must be different.'
'For when we have faced down impossible odds, when we've been told we're not ready or that we shouldn't try or that we can't, generations of Americans have responded with a simple creed that sums up the spirit of a people: Yes, we can.'
-- In Nashua, N.H., after losing the New Hampshire primary
'America can change. That is the true genius of this nation.'
-- Obama at the National Constitution Center in Philadelphia
'For 232 years, at each moment when that promise [of the American dream] was in jeopardy, ordinary men and women -- students and soldiers, farmers and teachers, nurses and janitors -- found the courage to keep it alive. We meet at one of those defining moments.'
-- At the Democratic National Convention in Denver
'The road ahead will be long. Our climb will be steep. We may not get there in one year, or even one term. But America, I have never been more hopeful than I am tonight that we will get there. I promise you, we as a people will get there.'
-- In Chicago's Grant Park on election night