While incarcerated, Mandela wrote hundreds of letters, taken from collections in various locations, and took nearly a decade to compile. From these letters we can not only see a great spiritual leader who fought for freedom and against the apartheid system.

Mandela is trapped in the dead, his eyes burned from long-term limestone mining, covered with a blanket as thin as paper in the cold winter. Although Mandela lost his physical freedom of movement, it did not stifle his freedom of thought. He held the heart of a gangster and worked hard in prison. When Mandela had time in prison, he read, studied, and took entrance exams, maintaining a positive attitude.

Mandela was 44 years old when he was shackled and put on a ferry to Robin Island Prison. He will be 71 years old when he is released. Mandela said: "In any extreme environment, people will always have one final freedom, and that is the freedom to choose their own attitude." With this attitude, he allowed his mind to transcend the confinement of the prison.

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Even in prison, Mandela has been in the global spotlight many times. His appeal and influence have spread all over the world, with 2,000 mayors in 53 countries around the world. Mayors signed a petition for Mandela's release; 78 British parliamentarians issued a joint statement, and mayors of more than 50 cities marched in London, demanding the British Prime Minister put pressure on South Africa to restore Mandela's freedom.

Mandela is a symbol. He represents the political transformation that the South African people achieved after untold hardships and at the cost of their lives. For this country, he played the role of "Father of the Nation".