My parents raised nine children altogether, and I was an island in time’s river, separated by six years from my older sister and five years from my younger brother. I got a lot of attention from my mother as a result, and trailed her around the house hoping she would reward me with a chore. The firmament of our relationship was work; we expressed love to one another in the thousands of little daily actions that kept a rural African family together. She showed me how to take care of the baby goats and cows, and how to grind cassava into flour. Even when I came back to visit my parents when I was grown it would be only minutes before I would find myself holding an empty jerrican and going to fetch well water for my mother.

There was a narrow path from the main road that twisted up the side of the ridge and passed through groves of banana trees. I had learned how to walk on this path. It was our connection with a small village called Nkomero, which occupies the top of one of the hundreds of thousands of hills in Rwanda. The nickname for my country is “the land of thousands of hills, ” or le pays des mille collines, but this signifies a gross undercount. There are at least half a million hills, maybe more. If geography creates culture, then the Rwandan mind is shaped like solid green waves. We are the children of the hills, the grassy slopes, the valley roads, the spider patterns of rivers, and the millions of rivulets and crevasses and buckles of earth that ripple across this part of Central Africa like the lines on the tired face of an elder. If you ironed Rwanda flat, goes the joke, it would be ten times as big. In this country we don’t talk about coming from a particular village, but a particular hill. We had to learn the hard way how to arrange our plots of corn and cabbage into flat terraces on the sloping ground so as not to turn a farm into an avalanche. Every inch of arable land is used this way. The daily walk up to a family grove can be an exercise in calf-straining misery going up, and in thigh-wracking caution going down. I think our legs must be the most muscular on the African continent.