"His death is irreversible, his legacy, undying. All of us, the government, the voters, civil society, the churches, are faced with an inescapable challenge: are we going to honor and sustain his legacy or deviate from it? Indeed, leaders across the globe ought to reflect on his legacy – particularly while they have the option to resolve disputes through peaceful negotiations instead of violence; abolish all nuclear devices or retain them to destroy our planet; take the quantum leap required to avert the lethal consequences of climate change and the depletion of the planet’s natural resources or enjoy our daily greed to such an extent that it forbids us to preserve our planet for our children to survive.”"
January 1, 1970
https://en.wikiquote.org/wiki/Nelson_Mandela