That one comment opened the floodgates, for it had a strong resonance in traditional African culture, which holds that a very sick person cannot die until his family "releases" him.
They have to give him "permission" to die by reassuring him that his loved ones will be fine when he's gone. So South Africans must now accept that they can get along without Nelson Mandela, and then he will be free to go.
It's not that everybody believes in this tradition, but it frames the conversation in a more positive way. People can argue about whether South Africa is doing as well as it should, but they can agree that Mandela got it safely through the most dangerous phase of the transition, and that they can continue the job of building a just and democratic society without him.
Except for President Robert Mugabe of Zimbabwe, of course. Mugabe has always deeply resented the fact that Nelson Mandela is revered as the father of his nation while he is seen as a vicious tyrant who has ruined his country. So he seized the opportunity of a recent interview on South African television to accuse Mandela of having failed in his duty to South Africa's black majority by being too soft on the whites.
"Mandela has gone a bit too far in doing good to the non-black communities, really in some cases at the expense of blacks," the dictator said. "That's being too saintly, too good, too much of a saint."
Nonsense. What Nelson Mandela and his white negotiating partner, F.W. De Klerk, were trying to avoid in the early 1990s was a South African civil war that would have killed millions and lasted for a long time. The 20 per cent white minority were heavily armed, and had nowhere else to go. Their families, for the most part, had been in South Africa for at least a century.
So a settlement that gave South Africa a peaceful (and hopefully prosperous) democratic future had to be one in which the whites had a future. So you either make the kind of deal that Mandela and De Klerk made, in which nobody loses too much, or you submit to a future that would make the current civil war in Syria look like a tea party.
Archbishop Desmond Tutu, talking about Mandela's death, said last week: "The best memorial to Nelson Mandela would be a democracy that was really up and running, a democracy in which every single person in South Africa knew that they mattered."
That is still some distance away, but Mandela has laid the foundations. He was the right man for the job - a saint who also understood realpolitik.
Gwynne Dyer is an independent journalist whose articles are published in 45 countries.
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