Business is recognizing the role it can play in combatting climate change. Thank God, is all I can say, for there is a desperately urgent need for business to play that role. Your lobbying influence can be substantial, but together, united and in large enough numbers it could prove decisive in turning the tide.

This was one of those special occasions when I could actually feel the inner appreciation of the beauty of the moment passing like an electric current through the brush in my hand.

While the demand for organic food outstrips supply, we happen to know that 77 percent of consumers don't want genetically engineered crops grown in this country. Consumers can choose whether or not to buy organic produce. Genetically modified ingredients will deny us choice in the long run.

To get the best results you must talk to your vegetables.

You have to give this much to the Luftwaffe: when it knocked down our buildings it did not replace them with anything more offensive than rubble. We did that.

The simple fact is that the world is not paying for the services the forests provide. At the moment, they are worth more dead than alive-for soya, for beef, for palm oil and for logging, feeding the demand from other countries. ... I think we need to be clear that the drivers of rainforest destruction do not originate in the rainforest nations, but in the more developed countries which, unwittingly or not, have caused climate change.

If you think about your and my grandchildren, this is what really worries me. I don't want them - if I'm still alive by then - to say, 'Why didn't you do something about it?', when you could have done.