At South Africa's University of Cape Town on Sunday, President Obama noted that he was speaking at the same place where, in 1966, then-Sen. Robert Kennedy, D-N.Y., delivered what some historians believe was the best speech of his life.
Obama was discussing about how, as a young man, he had come to believe that "I could be part of something bigger than myself; that my own salvation was bound up with those of others."
After visiting the jail cell on South Africa's Robben Island where Nelson Mandela spent 18 of his 27 years in prison during the long struggle against apartheid, President Obama wrote on Sunday about the bravery of Mandela and others who demanded their rights.
In a message he added to the island's visitors book, the president said:
Hailing Nelson Mandela's "moral courage," President Obama on Saturday paid tribute to the anti-apartheid icon and former South African president, who remains hospitalized in critical condition. Doctors have been treating him for a lung infection for the past three weeks.
South Africa is on watch for the fate of the 94-year-old Nobel Peace Prize laureate. The ailing Mandela, an international icon known for his fight to end apartheid, has been in the hospital for several days. For the latest on his condition, Renee Montagne speaks with NPR's Ofeibea Quist-Arcton.