Humility is to make a right estimate of one's self. It is no humility for a man to think less of himself than he ought, though it might rather puzzle him to do that.

If you think about the impact of climate change, [it should be how] a doctor would deal with the problem. A scientific hypothesis is tested to absolute destruction, but medicine can't wait. If a doctor sees a child with a fever, he can't wait for [endless] tests. He has to act on what is there. The risk of delay is so enormous that we can't wait until we are absolutely sure the patient is dying.

It is clear that through the partnerships between Global Cool and the International Indian Film Academy, Indian cinema has the potential to provide great leadership by exciting its enormous and enthusiastic audience to do their bit to save the planet

Some recent occurrences such as the BSE disaster and even perhaps - dare I mention it - the present severe weather conditions in our country are, I have no doubt, the consequences of mankind's arrogant disregard of the delicate balance of nature. We have to find a way of ensuring that our remarkable and seemingly beneficial advances in technology do not just become the agents of our own destruction.

Organic farming has been shown to provide major benefits for wildlife and the wider environment. The best that can be said about genetically engineered crops is that they will now be monitored to see how much damage they cause.

Any difficulties which the world faces today will be as nothing compared to the full effects which global warming will have on the world-wide economy.

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.