My father farmed in Carinthia, Austria, and I grew up working alongside him. He was not a man of many words. When he did speak, it was measured, the kind of thing worth sitting with rather than answering. I was not particularly good at sitting with things. Two generations of men on a farm: we had the stubbornness in common, not the patience.

One thought stayed with me: that we were not owners of the land but custodians for a generation, obliged to hand it back better than we found it. Soil depleted by one generation becomes a liability for the next. Varieties lost cannot be recovered. Knowledge not passed on disappears. He never liked monocultures, and chipped away at alternatives steadily rather than making radical changes. My instinct would have been to reject the whole model outright, go further and faster at the time. His approach turned out to be the more long-term sustainable.