inveterate habit

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References in classic literature ?
Fogg usually confined himself to the cabin, where he kept Aouda company, or, according to his inveterate habit, took a hand at whist.
After every successful trade he generally passed a longer or shorter term in jail; for when a poor man without goods or chattels has the inveterate habit of swapping, it follows naturally that he must have something to swap; and having nothing of his own, it follows still more naturally that he must swap something belonging to his neighbors.
Making an enormous effort to wake up, I walked over the receiver, thinking it could be Beto, sure, who was no longer by my side, sure, following his inveterate habit of running away while I'm asleep without a word about where he's gone.