If we can come up with innovations and train young people to take on new jobs, and if we can switch to clean energy, I think we have the capacity to build this world not dependent on fossil-fuel. I think it will happen, and it won't destroy economy.

My own advice to people who would be in office for two or three terms is that they must accept democratic rotation. Ideally not put themselves up for re-election and allow the system to work.

We often hear a lot about subsidies, because it's often the powerful talking about the poor; the poor don't have enough voice to question the privileges.

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.

Over time you learn to know a bit more about yourself - you develop a certain amount of self-insight and self-awareness, and you know what you can absorb, and what you cannot; what gets to you and what doesn't. And I observe a lot. I see a lot around me. And over time you also get to understand the nature of man and the environments you are dealing with, and you can't always allow emotions and temper to flare up because you're displeased with something, or you want to change it.

It is well known that you can only manage what you measure, and as this is the job of professional accountants, it means they have huge influence on companies' governance.

Most governments only want to deploy a peacekeeping force where there is a peace agreement and there is peace to keep. They are very hesitant about putting their men and women in harm's way. It is extremely difficult to get the troops if you do not have the consent of the country where you are deploying.