The majority of people in Angola were not provided with any kind of schooling and were completely illiterate, very badly paid, and treated almost as slaves.

The trip I made to Angola to study the prehistoric contents of the gravel beds as a means of deciding the age of the deposits and their economic potential was the first time prehistory had ever been used for such a purpose.

Most Kikuyu marriages were arranged on the basis of what is described by anthropologists as the bride price.

I put a bullet into the back of the crocodile's neck just behind the head, thus killing it. If a crocodile is hit in any other part of its anatomy it disappears into the water and is irrecoverable.

It's important for me to treat a girlfriend with respect. My mum would be horrified if I behaved any differently - and I have sisters, and would hate for them to be treated badly by guys.

Colonial governors and senior civil servants are not easy people to argue with, and I was not popular because of my criticism of the colonial service in Kenya.