Nothing was more remarkable than the instinct, as it seemed, with which the child comprehended her loneliness: the destiny that had drawn an inviolable circle round about her: the whole peculiarity, in short, of her position in respect to other children.
There are no more uses of "inviolable" in the book.
Show samples from other sources
Their lessons always proved invaluable and inviolable.
Piper Kerman -- Orange Is the New Black
All this was inviolable, like any set of natural laws.