Mandela describes prison time on Robben Island and Pollsmoor Prison. His 28-year tenure in prison was marked by the cruelty of Afrikaner guards, backbreaking labour, and sleeping in minuscule cells which were nearly uninhabitable. Unlike his biographer Anthony Sampson, Mandela does not accuse the warder James Gregory of fabricating a friendship with his prisoner. Gregory's book "Goodbye Bafana" discussed Mandela's family life and described Gregory as a close personal friend of Mandela. According to ', Gregory's position was to censor the letters delivered to the future president, and he thereby discovered the details of Mandela's personal life, which he then made money from by means of his book "Goodbye Bafana". Mandela considered suing Gregory for this breach of trust. In "Long Walk to Freedom" Mandela remarks of Gregory only that