Journey To The End Of The Night - pg. 114

... one may as well realize that in everyday life at least a hundred people thirst for your miserable life in the course of a single ordinary day - all those people, for instance, whom you annoy by being ahead of them in the Underground queue; all the people who pass by your apartment and haven't one of their own; all those who whold like you to hurry up and come out of the lavatory so that they can go in there themselves; your children too, and a host of others. It goes on all the time. One gets accustomed to it. On board ship this friction is more easily noticeable, so it's more annoying.