The real issue is not whether two and two make four or whether two and two make five, but whether life advances by men who love words or by men who love living.

Isaiah Berlin once said that there are two kinds of writers, hedgehogs and foxes. He said the fox knows many things, the hedgehog knows just one thing. So Shakespeare is a typical fox; Tolstoy and Dostoyevsky are typical hedgehogs. Now, I'm a typical hedgehog. I know just one thing, and I repeat it over and over again. I try to approach it from different angles to make it look different, but it's the same thing.

The Americans have always been more open to my ideas. In fact, I could earn a living in America just by lecturing. One of my brightest audiences, incidentally, were the prisoners in a Philadelphia gaol - brighter than my students at university.

No matter how honest scientists think they are, they are still influenced by various unconscious assumptions that prevent them from attaining true objectivity. Expressed in a sentence, Fort 's principle goes something like this: People with a psychological need to believe in marvels are no more prejudiced and gullible than people with a psychological need not to believe in marvels.

The visionary disciplines himself to see the world always as if he had only just seen it for the first time.

I've always believed that a writer has got to remain an outsider. If I was offered anything like the Nobel Prize for Literature, I'd find it an extremely difficult conflict because I'd be basically disinclined to accept.

The exploration of oneself is usually also an exploration of the world at large, of other writers, a process of comparison with oneself with others, discoveries of kinships, gradual illumination of one's own potentialities.