Over time you 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.

International law now grants rights to all human beings, not only to citizens.

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.

The future of peace and prosperity that we seek for all the world's peoples needs a foundation of tolerance, security, equality and justice.

I used to tell the story about as a young man in high school one of the professors came in and put a broad white sheet on the board with a dot in the right hand corner and said, "Boys, what do you see?" And we all shouted, a black dot. He stood back and said, "not a single one of you saw the broad white sheet, you all saw the black dot." He went on to tell us to focus on the broader picture, don't focus on the negative.

I laugh a lot inside and outside, and at myself sometimes.

People of different religions and cultures live side by side in almost every part of the world, and most of us have overlapping identities which unite us with very different groups. We can love what we are, without hating what – and who – we are not. We can thrive in our own tradition, even as we learn from others, and come to respect their teachings.