A theory is a good theory if it satisfies two requirements: it must accurately describe a large class of observations on the basis of a model that contains only a few arbitrary elements, and it must make definite predictions about the results of future observations.

The Universe in a Nutshell

If one is physically disabled, one cannot afford to be psychologically disabled as well.

Chaos, when left alone, tends to multiply.

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

Many badly needed goals, like fusion and cancer cure, would be achieved much sooner if we invested more.

I'm very interested in film making. It's telling a story, fiction or non-fiction. I have been filmed quite a lot. Contrary to popular belief, filming isn't glamorous. It can be wearingly repetitious, as the same shot is taken over and over again.