We need to promote greater tolerance and understanding among the peoples of the world. Nothing can be more dangerous to our efforts to build peace and development than a world divided along religious, ethnic or cultural lines. In each nation, and among all nations, we must work to promote unity based on our shared humanity.

It may seem sometimes as if a culture of peace does not stand a chance against the culture of war, the culture of violence and the cultures of impunity and intolerance. Peace may indeed be a complex challenge, dependent on action in many fields and even a bit of luck from time to time. It may be a painfully slow process, and fragile and imperfect when it is achieved. But peace is in our hands. We can do it.

His Holiness brings a wealth of experience to this exalted office. The United Nations and the Holy See share a strong commitment to peace, social justice, human dignity, religious freedom and mutual respect among the world's religions.

UN peacekeeping operations are now increasingly complex and multi-dimensional, going beyond monitoring a ceasefire to actually bringing failed States back to life, often after decades of conflict. The blue helmets and their civilian colleagues work together to organize elections, enact police and judicial reform, promote and protect human rights, conduct mine-clearance, advance gender equality, achieve the voluntary disarmament of former combatants, and support the return of refugees and displaced people to their homes.

No one is born a good citizen; no nation is born a democracy. Rather, both are processes that continue to evolve over a lifetime. Young people must be included from birth. A society that cuts off from its youth severs its lifeline.

When we talk about the UN, what are we really talking about? We are talking about my country, your country, other countries and their collective will to stand together and apply pressure or offer incentives to steer things in the right direction. When the nations of the world come together, with collective will, on an issue and they speak with a united voice, they have a much greater impact. When there is division, then the impact is much, much less.

This is an historic step forward in the world's efforts to combat a truly global threat.