If we want to see a more peaceful world, we have to learn to collaborate. Young people shouldn’t follow previous patterns of behaviour. New conditions, like our interdependent, globalised world, require new ideas. Dividing people into ‘us’ and ‘them’ is out of date.

Today, the world is interdependent as never before, which is why we need a keen sense of the oneness of all human beings. We have to take the whole of humanity into account. We have to understand what we have in common with everyone else.

What is important is not so much how long you live as whether you live a meaningful life. This doesn’t mean accumulating money and fame, but being of service to your fellow human beings. It means helping others if you can, but even if you can’t do that, at least not harming them.

As a result of material development and modern education, people commonly seek happiness in external things, but neglect their minds. True, lasting happiness depends on our taming our unruly minds. This is not so much about intellectual development as cultivating a warm heart.

People face difficulties in many parts of the world, but since all seven billion of us live on this one planet we should be united and stand in solidarity with each other. When this blue planet is viewed from space, there are no national boundaries to be seen.