Some individuals are better able than others to draw the right conclusions about the world about them and act accordingly. These individuals will be more likely to survive and reproduce so their pattern of behaviour and thought will become dominant

Many people do not like the idea that time has a beginning, probably because it smacks of divine intervention.

You cannot understand the glories of the universe without believing there is some Supreme Power behind it.

I like physics, but I love cartoons.

Not to leave planet Earth would be like castaways on a desert island not trying to escape...Sending humans to other planets ... will shape the future of the human race in ways we don't yet understand, and may determine whether we have any future at all.

I don't think the human race will survive the next thousand years, unless we spread into space. There are too many accidents that can befall life on a single planet. But I'm an optimist. We will reach out to the stars.

Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor.