We're all human. After 10, 15 years you get tired, you run out of steam and ideas, you have to give a chance to somebody else. And whether you yourself are inclined to stay on, all those around you are pushing you to stay on for what they will gain.

The future belongs to you, but it can only belong to you if you participate and take charge

You are never too young to lead.

You have made people listen. You have made people care, and you have taught us that whether we are poor or prosperous, we have only one world to share. You have taught young people that they do have the power to change the 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.

If you have a problem and you can't find a solution, you meet again tomorrow and you keep talking until you find a solution. You can disagree with behavior or a particular position, but you do not resort to calling an opponent worthless.

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.