Arkady and Boris Strugatsky. Roadside picnic (№ 784)

The trouble is that we don't notice as the years pass, he thought. To hell with the years, we don't notice everything changing. We know that everything changes, we are taught from childhood that everything changes, we have seen many times with my own eyes how things are changing, and at the same time, we are not able to notice the moment when there is a change, or looking for a change, not where he should be.