Ants are so much like human beings as to be an embarrasment...They do everything but watch television.

It is from the progeny of this parent cell that we all take our looks; we still share genes around, and the resemblance of the enzymes of grasses to those of whales is in fact a family resemblance.

The capacity to blunder slightly is the real marvel of DNA. Without this special attribute, we would still be anaerobic bacteria and there would be no music.

Statistically, the probability of any one of us being here is so small that you'd think the mere fact of existing would keep us all in a contented dazzlement of surprise.

In real life, every field of science is incomplete, and most of them - whatever the record of accomplishment during the last 200 years - are still in their very earliest stages.

We owe our lives to the sun... How is it, then, that we feel no gratitude?

The greatest single achievement of nature to date was surely the invention of the molecule DNA.

It is in our genes to understand the universe if we can, to keep trying even if we cannot, and to be enchanted by the act of learning all the way.

I would send the complete works of Johann Sebastian Bach into outer space on the Voyager spacecraft. But that would be boasting.

Animals have genes for altruism, and those genes have been selected in the evolution of many creatures because of the advantage they confer for the continuing survival of the species.

We leave traces of ourselves wherever we go, on whatever we touch.

Make your dreams your goals, so that they are a part of you and not just a wish.

The nature of Nature is change.

When time furtively slips like sand through the fingers and our memory becomes tired and lazy, we recognize we are at war. We are at war with forgetfulness. ("The past was her best friend" )

A person who always finds something wrong is most likely thinking wrong.

Today, especially, when there are so many stations for viewers to choose from, if they want news, they always come to CNN and that's where I wanted to be

autumn days have a holiness that spring lacks ... They are like old serene saints for whom death has lost its terror.

By seeking and blundering we learn.

The longer your gevity is, the more confidence you build.

You're going to see a million people here who have the courage to come and not let terrorists win, and that's exactly what we should all do.

If you see in your children most of your own faults, you have failed as a parent, but succeeded as a neurotic.