In the vastness of space and the immensity of time, it is my joy to share a planet and an epoch with Annie.

When we look up at night and view the stars, everything we see is shinning because of distant nuclear fusion.

We are all star stuff.

I am often amazed at how much more capability and enthusiasm for science there is among elementary school youngsters than among college students.

I find science so much more fascinating than science fiction. It also has the advantage of being true.

The significance of our lives and our fragile planet is then determined only by our own wisdom and courage. We are the custodians of life's meaning. We long for a Parent to care for us, to forgive us our errors, to save us from our childish mistakes. But knowledge is preferable to ignorance. Better by far to embrace the hard truth than a reassuring fable. If we crave some cosmic purpose, then let us find ourselves a worthy goal.

Because men, compared to male chimps, have such relatively small testicles (large testicles indicate a species where many males mate, one after the other, with the same female), we might guess that promiscuous societies were uncommon in the immediate human past.