The usual run of children's books left me cold, and at the age of six I decided to write a book of my own. I managed the first line, 'I am a swallow.' Then I looked up and asked, 'How do you spell telephone wires?

I learned about Chinese ceramics and African sculptures, I aired my scanty knowledge of the French Impressionists, and I prospered.

When people start talking of man's inhumanity to man it means they haven't actually walked far enough.

'I will go to France, to Yugoslavia, to China, and continue my profession.' 'As sanitary engineer?' 'No, Monsieur. As adventurer. I will see all the peoples and all the countries of the world.'

And when you look along the way we've come, there are spirals of vultures wheeling.

And the formation of man is the most pressing problem facing humanity.

For life is a journey through a wilderness