I learned the way a monkey learns - by watching its parents.

Boy, the things I do for England.

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

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.

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.

There's nothing like a jolly good disaster to get people to start doing something.

Forests are the world's air-conditioning system-the lungs of the planet-and we are on the verge of switching it off.