Fundamentally not to waste energy. If we were all to reduce our demands for energy, it would make an enormous amount of difference.
David AttenboroughDealing with global warming doesn't mean we have all got to suddenly stop breathing. Dealing with global warming means that we have to stop waste, and if you travel for no reason whatsoever, that is a waste.
David AttenboroughLife is not all high emotion. Some of the most interesting things are when its not highly emotional: little details of relationships and body language.
David AttenboroughSentimentalising is anathema, as far as I am concerned. It leads you into ethical problems about violence and killing and eating meat. The whole world becomes topsy-survy if you impose moralities that were evolved within human society on what a blowfly or what a parasite does... there are lots of emotions you can deduce from an animal's behaviour that are correct, but when you start saying it's feeling guilty or thinking or a loved one or mourning, you must be very careful of those feelings.
David Attenborough