Look, I am very competitive.

This is not a battle between the United States of America and terrorism, but between the free and democratic world and terrorism.

The best philanthropy is not just about giving money but giving leadership. The best philanthropists bring the gifts that made them successful-the drive, the determination, the refusal to accept that something can't be done if it needs to be into their philanthropy.

Obviously it is right that the Afghans take responsibility for their own future in the end, but they need to know and feel that we are there as partners for them if they are prepared to make the necessary changes. But we should be in no doubt as to why we are in Afghanistan. We ended up there because terrorism hatched there erupted thousands of miles away in New York on Sept. 11.

The threat today is not that of the 1930s. It's not big powers going to war with each other. The ravages which fundamentalist political ideology inflicted on the 20th century are memories. The Cold war is over. Europe is at peace, if not always diplomatically.

They could have been removed. They could have been hidden. They could have been destroyed.

Climate change is the world's greatest environmental challenge. It is now plain that the emission of greenhouse gases, associated with industrialization and economic growth...is causing global warming at a rate that is unsustainable.