The time came for Michael to return to America. He had to be at Dartmouth by the third week of August, and in late July he told us that he did not intend to go. He wanted to stay in Botswana for at least another year, he said. He had contacted Dartmouth, without our knowing it, and they had agreed to defer his taking up his place for a year. I was alarmed, as you can imagine. You just have to go to college in the States, you see. If you don't, then you'll never get a job worth anything. And I had visions of Michael abandoning his education and spending the rest of his life in a commune. I suppose many parents have thought the same when their children have gone off to do something idealistic.

Jack and I discussed it for hours and he persuaded me that it would be best to go along with what Michael proposed. If we attempted to persuade him otherwise, then he could just dig in further and refuse to go at all. If we agreed to his plan, then he might be happier to leave when we did, at the end of the following year.

"It's good work that he's doing," Jack said. "Most people of his age are utterly selfish. He's not like that."

And I had to agree he was right. It seemed completely right to be doing what he was doing. Botswana was a place where people believed that work of that sort could make a difference. And remember that people had to do something to show that there was a real alternative to what was happening in South Africa. Botswana was a beacon in those days.

So Michael stayed where he was and of course when the time came for us to leave he refused to accompany us. He still had work to do, he said, and he wanted to spend a few more years doing it. The farm was thriving; they had sunk several more boreholes and they were providing a living for twenty families. It was too important to give up.