Conservation of energy. Never stand up when you can sit down, and never sit down when you can lie down.

Euphemism is a human device to conceal the horrors of reality.

I don't write huge books any more. I used to write 1,000 printed pages, but now I write short books. I did one on Napoleon, 50,000 words - enjoyed doing that. He was a baddie. I did one on Churchill, which was a bestseller in New York, I'm glad to say. 50,000 words. He was a goodie.

If the decline of Christianity created the modern political zealot - and his crimes - so the evaporation of religious faith among the educated left a vacuum in the minds of Western intellectuals easily filled by secular superstition. There is no other explanation for the credulity with which scientists, accustomed to evaluating evidence, and writers, whose whole function was to study and criticize society, accepted the crudest Stalinist propaganda at its face value. They needed to believe; they wanted to be duped.

In the last generation, with public Christianity in headlong retreat, we have caught our first, distant view of a de-Christianized world , and it is not encouraging.

The Second World War took place not so much because no one won the First, but because the Versailles Treaty did not acknowledge this truth.

I was very fond of Princess Diana. She used to have me over to lunch to ask my advice. I'd give her good advice, and she'd say: 'I entirely agree. Paul, you're so right.' Then she'd go and do the opposite.