If I have questions about the universe on my mind when I go to bed, I can't turn off. I dream equations all night.

Because there is a law such as gravity, the Universe can and will create itself from nothing. Spontaneous creation is the reason there is something rather than nothing, why the Universe exists, why we exist. It is not necessary to invoke God to light the blue touch paper and set the Universe going.

To my mathematical brain, the numbers alone make thinking about aliens perfectly rational.

Science predicts that many different kinds of universe will be spontaneously created out of nothing. It is a matter of chance which we are in.

We each exist for but a short time, and in that time explore but a small part of the whole universe

Computers double their performance every month.

If we ever do find a complete theory of the universe, it would be a great triumph of human reason but it wouldn't leave much for us to do. We need an intellectual challenge.