The symbolism - and the substantive significance - of planting a tree has universal power in every culture and every society on Earth, and it is a way for individual men, women and children to participate in creating solutions for the environmental crisis.

The scientists are virtually screaming from the rooftops now. The debate is over! There's no longer any debate in the scientific community about this. But the political systems around the world have held this at arm's length because it's an inconvenient truth, because they don't want to accept that it's a moral imperative.

I am old enough to know that a red carpet is just a rug.

You need to really scrub your investment portfolios, because I guarantee you, many of you are going to find them chock-full of subprime carbon assets.

I believe that the purpose of life is to glorify God.

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

The ten hottest years in the atmospheric record, going back only 160 years, have been in the last eleven years.