Oliver Thambo was perhaps the most important of them all and a guide to the others. Walter Sisulu, whose family still participates in government, was another. Govan Mbeki, the father of Thabo Mbeki, a former president of South Africa, was less visible but a great mentor. There were others, like Ahmed Kathrada, a strong, silent comrade who shared the prison cell at Robben Island with Mandela. Kathrada, as a non-African, was allowed to wear trousers and eat from normal plates, while Mandela, of African race, had to wear shorts and eat from aluminium plates. The intimacy and support for each other that the two maintained in the face of such stinging discrimination is unbelievable. That fellow feeling is evident even today. As Mandela lay unwell in hospital in these last few weeks, Kathrada was one of the few visitors whom Mandela recognised.