Hope and change are such big words, audacious words. Maybe the guy is referencing to the Sam Cooke song A Change is Gonna Come which marked the historical civil rights movement, I dunno. And Barack, whose name sounds with Iraq and a surname that rhymes with that of the Al-Qaeda leader (quite an unpopular name if you think about it), not only has the courage to take up these words but he has the willpower and conviction to realize these seemingly abstract words in an American era still mired in uncertainty. Hope and change are powerful words, something where you can put intellect and brilliance to good use - and it takes audacity to realize them.
photo from Salon.com