Nelson Mandela, the founding president of democratic South Africa, reminds us in his seminal autobiography, Long Walk to Freedom, that in life, after climbing a great hill, one only finds there are many more to climb ahead.“I have taken a moment here to rest, to steal a view of the glorious vista that surrounds me, to look back on the distance I have come,” wrote Mandela. “But I can rest only for a moment, for with freedom comes responsibilities, and I dare not linger, for my long walk is not ended.”As SA celebrates its 30th anniversary as a nonracial democracy and a stable…