Conservation must become before recreation.

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.

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.

If you chuck away too many things, you end up discovering there was value in them.

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.

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

The whole imposing edifice of modern medicine is like the celebrated tower of Pisa - slightly off balance.