Read it through once

“Fiend! she wants to know my habits, that she may lay her plans accordingly!” Indignation again prevailed over prudence: I replied sharply, “Hitherto I have often omitted to fasten the bolt: I did not think it necessary. I was not aware any danger or annoyance was to be dreaded at Thornfield Hall: but in future” (and I laid marked stress on the words) “I shall take good care to make all secure before I venture to lie down.”