I think the first and most important lesson of Nelson Mandela for humanity is not his endeavor to reach an international peace. It is his success to reach an internal peace. The peace that allowed him to know who a politician should be. He lived for life and so he will be forever alive.
Very Well said Ali Sadegh Daghighi. All that we ever need to find is inside us. People like Mandela realised this and found their own self. Rest automatically followed.
There is something that I would like to add with reference to the question. The one lesson that we must learn from Mandela's life is TOLERANCE. When we look at his struggle against apartheid, he was not contesting for political power. He was not begging for mercy. He was not asking for compromise in political space. He was not seeking friendship. He was asserting the due of the native people for their identity without booting the White population out.
Initially, he thought he would achieve it by the gun. History shows that ANC and Mandela himself were classified terrorists. But as he matured into Nelson Mandela, he realised that the gun is useless. It would only alienate. It would not accommodate. The new South Africa, a nation where African and White races have just one identity - being South Africans - was realised.
I feel that this lesson in TOLERANCE is the only lesson that we need to learn and apply to all the trouble spots in the world - from west Asia to the Pacific and beyond.
those parameters are also well defined but as African's citizens ,he became role-model in humility life by considering the two race in one country and build their own country without the torturing to him and thought only to unite the country of both@
El arte de aguantar. Conocido este como esa capacidad de resistencia que tiene el ser humano para sobreponerse a las situaciones que van en contra de sus probabilidades de supervivencia.
Por eso "es un error grave por parte de cualquier líder mostrarse hipersensible ante la crítica, dirigir los debates como si él o ella fuera un profesor de escuela que habla a unos alumnos menos informados e inexpertos". (De Conversaciones conmigo mismo. p. 366)