I am President of the UN created University for Peace, which has a strong commitment to the relationship between peace, security and the environment. I meet with young people around the world and I always come away enthused and encouraged.

Well they do have a use, but we should never believe that any international conference is going to suddenly solve problems like the condition of the global environment.

So, what we do as individuals matters. It adds up.

It is the responsibility of each human being today to choose between the force of darkness and the force of light. We must therefore transform our attitudes, and adopt a renewed respect for the superior laws of Divine Nature.

Don't accept that you can't make a difference. Because if you can't make a difference, you won't make a difference, and if you put a multiplier on that we will continue on an unsustainable pathway.

We must, from here on in, all go down the same path... There may not be another chance.

The combination of population growth and the growth in consumption is a danger that we are not prepared for and something we will need global co-operation on.