The fact that no one understands you doesn't mean you're an artist.

Maybe I'm being a bit harsh on philosophers, but they have not been very kind to me... I have been variously called nominalist, an instrumentalist, a positivist, a realist, and several other ists. The technique seems refutation by denigration: If you can attach a label to my approach, you don't have to say what is wrong with it... I am sure that Einstein, Heisenberg and Dirac didn't worry about whether they were realists or instrumentalists.

I think the next century will be the century of complexity.

There are grounds for cautious optimism that we may now be near the end ofthe search for the ultimate laws of nature.

Time travel was once considered scientific heresy, and I used to avoid talking about it for fear of being labelled a 'crank.'

What is important is that we have the ability to create.

I think computer viruses should count as life ... I think it says something about human nature that the only form of life we have created so far is purely destructive. We've created life in our own image.