<p>Jacob Zuma is a man who walks in two worlds. As president of South Africa, he is tasked with upholding the principles that define the Constitution and embodying the values they are designed to engender. But, as an individual, a set of private impulses - ranging from his religious beliefs, to his traditional African cultural convictions, to a populist and patriarchal attitude to power - defines his world view; and many of these impulses run cou...