Victor Hugo,
Les Misérables — Volume 5, Book Third…
“ Thus it will be easily understood that that grating, so obligingly opened to Jean Valjean, was a bit of cleverness on Thenardier's part. Thenardier intuitively felt that Javert was still there; the man spied upon has a scent which never deceives him; it was necessary to fling a bone to that sleuth-hound. An assassin, what a godsend! Such an opportunity must never be allowed to slip. ”
