We have spent the best part of the past century enthusiastically testing the world to utter destruction; not looking closely enough at the long-term impact our actions will have.

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.

Hong Kong has created one of the most successful societies on Earth.

I find myself born into this particular position. I'm determined to make the most of it. And to do whatever I can to help. And I hope I leave things behind a little bit better than I found them.

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.

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.

Personally, I have been very impressed by the slow food movement. It is about celebrating the culture of food, of sharing the extraordinary knowledge, developed over millennia, of the traditions involved with quality food production, of the sheer joy and pleasure of consuming food together. Especially within the context of family life, this has to be one of the highest forms of cultural activity.