"There are so many people in South Africa, within the country, who are muzzled. And there are others who may not be muzzled within South Africa but whose passports are withdrawn, people like Bishop Desmond Tutu-a very important voice; you know, a writer is nothing compared with him. He is a big figure, a real leader, and he can't go abroad and speak. So I think that those of us who can, as long as we can, we have to use the opportunity."