A model is a good model if first it interprets a wide range of observations in terms of a simple and elegant model, and second if the model makes definite predictions that can be tested, and possibly falsified, by observation.

I do not believe in a personal God.

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

I want to know why the universe exists, why there is something greater than nothing.

Scientists have become the bearers of the torch of discovery in our quest for knowledge.

Although quantum mechanics has been around for nearly 70 years, it is still not generally understood or appreciated, even by those that use it to do calculations.

I don't think the human race will survive the next thousand years, unless we spread into space.