Education is a human right with immense power to transform. On its foundation rest the cornerstones of freedom, democracy and sustainable human development.

We need to promote greater tolerance and understanding among the peoples of the world. Nothing can be more dangerous to our efforts to build peace and development than a world divided along religious, ethnic or cultural lines. In each nation, and among all nations, we must work to promote unity based on our shared humanity.

There can be no doubt that these attacks are deliberate acts of terrorism, carefully planned and coordinated and as such I condemn them utterly. Terrorism must be fought resolutely wherever it appears.

Violence against women is perhaps the most shameful human rights violation, and it is perhaps the most pervasive. It knows no boundaries of geography, culture or wealth. As long as it continues, we cannot claim to be making real progress towards equality, development and peace

It's not that easy to quit. When you look back in the American system it is very rare that people quit on issues of principle.

In an age of interdependence, global citizenship - based on trust and sense of shared responsibility - is a crucial pillar of progress. At a time when more than one billion people are denied the very minimum requirements of human dignity, business cannot afford to be seen as the problem. Rather, it must work with governments and all other actors in society to mobilize global science, technology and knowledge to tackle the interlocking crises of hunger, disease, environmental degradation and conflict that are holding back the developing world.

I can't think of a 30- or 40-year-old who can behave like Mugabe. They wouldn't even know where to begin, and given their own educational exposure, I think it will be very positive for Africa.