I flew on Air Force Two for eight years, and now I have to take off my shoes to get on an aeroplane.

We're all capable of mistakes, but I do not care to enlighten you on the mistakes we may or may not have made.

I flew on Air Force Two for eight years, and now I have to take off my shoes to get on an aeroplane.

Eventually we'll use a CO2 tax offset by a reduction in taxes elsewhere alongside a cap-and-trade plan, but the degree of difficulty associated with a CO2 tax far exceeds that with a cap-and-trade plan. We're seeing it's hard to get a cap-and-trade plan and it's much easier to use as a basis for a global agreement than a CO2 tax.

Unless we act boldly and quickly to deal with the underlying causes of global warming, our world will undergo a string of terrible catastrophes.

George W. Bush promised us a foreign policy with humility. Instead, he has brought us humiliation in the eyes of the world. He promised to restore honor and integrity to the White House. Instead, he has brought deep dishonor to our country and built a durable reputation as the most dishonest president since Richard M. Nixon.

This is by far the most serious crisis civilisation has ever faced.