I would like to call on young people to commit themselves to activities that contribute toward achieving their long-term dreams. They have the energy and creativity to shape a sustainable future. To the young people I say, you are a gift to your communities and indeed the world. You are our hope and our future.

You cannot blame the mismanagement of the economy or the fact that we have not invested adequately in education in order to give our people the knowledge, the skills and the technology that they need in order to be able to use the resources that Africa has to gain wealth

We think that diamonds are very important, gold is very important, all these minerals are very important. We call them precious minerals, but they are all forms of the soil. But that part of this mineral that is on top, like it is the skin of the earth, that is the most precious of the commons.

For me planting a tree is a very doable thing. It's not complicated, it doesn't require technology, it doesn't require much knowledge, but it can be a very important entry point into communities understanding how they destroy their own resources, but how they can also restore those resources, and not wait for their government or international agencies to come and help them.

There will always be people who think that you have ambitions.

Resources on the planet are limited, and limited resources can come to an end. But there are also a lot of resources that are renewable. A lot of land, for example, can be reclaimed from the encroaching deserts.

It is evident that many wars are fought over resources which are now becoming increasingly scarce. If we conserved our resources better, fighting over them would not occur ... protecting the global environment is directly related to securing peace. Those of us who understand the complex concept of the environment have the burden to act. We must not tire, we must not give up, we must persist.