One hardly knows where, in the history of science, to look for an important movement that had its effective start in so pure and simple an accident as that which led to the building of the great Washington telescope, and went on to the discovery of the satellites of Mars.

As years passed away I have formed the habit of looking back upon that former self as upon another person, the remembrance of whose emotions has been a solace in adversity and added zest to the enjoyment of prosperity.

So far as the economic condition of society and the general mode of living and thinking were concerned, I might claim to have lived in the time of the American Revolution.

We are probably nearing the limit of all we can know about astronomy.

I was interested in science or, at least, nature from an early age, learning the names of planets, cutting cartoons with facts about animals out of the newspaper and gluing them into a scrapbook, and, with a friend when I was five or six, trying to design a submarine.

A classic is a book which with each rereading offers as much of a sense of discovery as the first reading.

Doctor Who' is part of my science fictional DNA. You could take it out of me, and I'd probably still have ended up being a writer, but almost certainly not the same one.

In life, we have two segments: arts and science. We need science to make our lives easier. But what do we live for? We enjoy life through arts. So it's an artistes duty to question the wrongs happening in the society.