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.

No one is born a good citizen; no nation is born a democracy. Rather, both are processes that continue to evolve over a lifetime. Young people must be included from birth. A society that cuts off from its youth severs its lifeline.

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.

We can love what we are, without hating what, and who, we are not.

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.

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.

The gap between the rich and the poor cannot keep growing without nothing being done about it.