Which book changed the way you think, and what did it change?

In history I decided to begin with Gibbon. Someone had told me that my father had read Gibbon with delight; that he knew whole pages of it by heart, and that it had greatly affected his style of speech and writing. So without more ado I set out upon the eight volumes of Dean Milman's edition of Gibbon's Decline and Fall of the Roman Empire . I was immediately dominated both by the story and the style. All through the long glistening middle hours of the Indian day, from when we quitted stables till the evening shadows proclaimed the hour of Polo, I devoured Gibbon. I rode triumphantly through it from end to end and enjoyed it all.

I fell in love with the stories by William Beebe, who was an ocean explorer. He discussed what it was like to go down inside a submersible, and peer out of a port hole and see beautiful, luminescent fish, with lights down the side like ocean liners. Bizarre creatures of the sort that you just don’t see walking down the street, or going into the forest, or even looking around in shallow water.

It was probably a series of biographies of scientists like Pasteur, or even earlier ones — Leeuwenhoek inventing the microscope and Madame Curie. I forget how many others, but it was really just, for me, a fascination to learn about these great heroes. At that time, of course, they were totally inaccessible, almost non-human, to me. It became very interesting to me.

It’s amazing. I just started looking at everything differently. I love that book. But a book is a kind of thing of magic. It contains a universe of information.