The First Precaution
To keep every cog and wheel is the first precaution of intelligent tinkering.
Aldo Leopold spent decades as a forester and wildlife ecologist, and he wrote these words after watching firsthand what happened when a single piece of a landscape was removed. He had seen deer populations explode once wolves were hunted out of the American West, stripping hillsides bare and starving the very herds the hunters meant to protect. Writing in the 1940s, as roads and farms pushed harder into wild country, he argued that no plant or animal was too small or too strange to matter to the whole. His point was practical, not sentimental: you cannot know in advance which part holds the system together, so the safest rule is to save all the parts.
Reflection
Leopold believed no part of a living system was too small to matter. What small daily habit holds more of my life together than I usually notice?