We are all different. There is no such thing as a standard or run-of-the-mill human being, but we share the same human spirit.

However difficult life may seem, there is always something you can do and succeed at.

The real challenge is to work out what aliens might actually be like.

I have experimental evidence that time travel is not possible.

Time travel may be possible, but it is not practical.

People think I'm a Simpsons character.

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.