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

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.

It takes less than a decade for today's luxury to become a universal necessity.

If we want foxes, to observe and delight in, we must have hunting.

His (Lenin's)humanitarianism was a very abstract passion. It embraced humanity in general but he seems to have had little love for, or even interest in, humanity in particular. He saw the people with whom he dealt, his comrades, not as individuals but as receptacles for his ideas. On that basis, and no other, they were judged. He judged man not by their moral qualities but by their views, or rather the degree to which they accepted his.

There are no inevitabilities in history

...the century's most radical vice... the notion that human beings can be shoveled around like concrete.