Throughout human history, in any great endeavour requiring the common effort of many nations and men and women everywhere, we have learned - it is only through seriousness of purpose and persistence that we ultimately carry the day. We might liken it to riding a bicycle. You stay upright and move forward so long as you keep up the momentum.

One of the main lessons I have learned the last five years as Secretary-General is that the United Nations cannot function properly without the support of the business community and civil society. We need to have tripartite support - the governments, the business communities and the civil society.

In the Andes and the Alps, I have seen melting glaciers. At both of the Earth's Poles, I have seen open sea where ice once dominated the horizon.

Ban Ki-moon Quotes