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

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?

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.

At this early stage in our evolution, now through our infancy and into our childhood and then, with luck, our growing up, what our species needs most of all, right now, is simply a future.

Whatever we do and are, we are given the means thereof

Religion works on some people but not on everyone, because it says, 'Stop thinking and accept what I tell you.' That's not valid for people who want to think and reflect.

You are afraid of me, because I talk like a sphinx.

Naina is one of the most special films & special characters that I've played in recent times

When cornered, a rattle snake can become so angry it's been known to bite itself, which is exactly how I feel in traffic and relationships.

I don't know who's worse with little boys, Mario or Michael Jackson.

I have no spy stories to tell, because I saw no spies. Nor did I understand, at that time, any opposition between American and Russian national interest.

A person who has a dream knows what he is willing to give up in order to go up.

I'm so totally future oriented that, for me, I don't know what the future's about, but I can promise you it's gonna be exciting.

The last thing a scientist would do is cling to a map because he inherited it from his grandfather, or because it was used by George Washington or Abraham Lincoln.