Our only chance of long-term survival is not to remain lurking on planet Earth, but to spread out into space.

A million million million million (1 with twenty-four zeros after it) miles, the size of the observable universe.

One should love animals. They are so tasty.

The universe does not behave according to our pre-conceived ideas. It continues to surprise us.

I believe in universal health care. And I am not afraid to say so.

It should soon be possible dramatically to increase the intelligence and life span of a few individuals. They and their offspring could become a master race. Evolution pays no regard to social justice. It was not fair on the Neanderthals they were replaced by modern humans.

It is impossible to imagine a four-dimensional space. I personally find it hard enough to visualize a three-dimensional space!