Safety

The sense of security more frequently springs from habit than from conviction, and for this reason it often subsists after such a change in the conditions as might have been expected to suggest alarm. The lapse of time during which a given event has not happened is, in this logic of habit, constantly alleged as a reason why the event should never happen, even when the lapse of time is precisely the added condition which makes the event imminent. A man will tell you that he has worked in a mine for forty years unhurt by an accident as a reason why he should apprehend no danger, though the roof is beginning to sink; and it is often observable that the older a man gets the more difficult it is to him to retain a believing conception of his own death.