As we move forward, you cannot resolve the potential food crisis or shortages without science being part of the solution. Science has to be part of the solution but African governments - and these are decisions for governments, whether they embrace or do not embrace genetically modified food - and for the moment, most African companies do not accept genetically modified seeds.

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.

Human rights education is much more than a lesson in schools or a theme for a day; it is a process to equip people with the tools they need to live lives of security and dignity. On this International Human Rights Day, let us continue to work together to develop and nurture in future generations a culture of human rights, to promote freedom, security and peace in all nations.

I observe a lot. I see a lot around me.

You need younger men in Africa, men and women in African politics.

Literacy is a bridge from misery to hope. It is a tool for daily life in modern society. It is a bulwark against poverty, and a building block of development... For everyone, everywhere, literacy is, along with education in general, a basic human right.... Literacy is, finally, the road to human progress and the means through which every man, woman and child can realize his or her full potential.

I was an ordinary boy at school, a young man. In fact, what did the headmaster once say? "You're constantly challenging those in authority; questioning and challenging those in authority." Which was not really the way I saw it. I felt there were questions that had to be answered, and things that weren't quite right.