CAPE TOWN, South Africa President Barack Obama says if any country in the world shows how people can create change, it's South Africa.
Obama is speaking at the University of Cape Town during a weeklong trip to sub-Saharan Africa. He's invoking former South African President Nelson Mandela's struggles as the source of his own inspiration to serve the public.
Obama's speech comes nearly 50 years after Robert F. Kennedy delivered his famous "Ripple of Hope" speech at the same school. Obama says it would have been impossible to imagine that 50 years later, an African-American president would address the school.
He says figures like Mandela and Kennedy represent a challenge to make a difference. He says they show that the voice of the next generation matters.