I have just scolded my brother for turning on the outside lights again.

The people like light. Without it, their eyes might as well be closed, as that dim half-sight unbalances them more than a lack of it. Like not wearing my glasses unbalances me. Or, perhaps, it is a habit: sun goes down, lights go on. This, we must do, and in the morning, we must turn them off again. A long flickering.