"Silence, boy, we are not in Paris any longer." It was an unfortunate reaction from the boy, as Javert was quite aware of certain crewmembers' propensity toward jumping to ridiculous conclusions, and he did not need anyone assuming he was anything less than a servant of the law.

"This is not France, little gamin, and you would do well to take care." Javert is not going to be responsible for the boy, especially if he goes and gets himself into trouble or into danger; though he is a gamin, and a hardy breed.