A model is done when nothing else can be taken out.

One factor that has remained constant through all the twists and turns of the history of physical science is the decisive importance of the mathematical imagination.

A model is done when nothing else can be taken out.

In the long run, the only solution I see to the problem of diversity is the expansion of mankind into the universe by means of green technology... Green technology means we do not live in cans but adapt our plants and our animals and ourselves to live wild in the universe as we find it... When life invades a new habitat, she never moves with a single species. She comes with a variety of species, and as soon as she is established, her species spread and diversify further. Our spread through the galaxy will follow her ancient pattern.

It makes very little sense to believe the output of the climate models.

Theory said one thing and the experiment said something different, so that was the stimulus that started me going, that there was something there to be explained, which wasn't understood and to try to see why that experiment gave the answer it did, so it was a big opportunity for a young student starting to have actually an experiment which contradicted the theory, so that's was my chance to understand that.

Younger people have so many opportunities. I don't see any pessimism among them.