Northanger Abbey by Jane Austen Chapter 18 Page 15

The compliment of John Thorpe's affection did not make amends for this thoughtlessness in his sister. She was almost as far from believing as from wishing it to be sincere; for she had not forgotten that he could mistake, and his assertion of the offer and of her encouragement convinced her that his mistakes could sometimes be very egregious.

In vanity, therefore, she gained but little; her chief profit was in wonder. That he should think it worth his while to fancy himself in love with her was a matter of lively astonishment. Isabella talked of his attentions; she had never been sensible of any; but Isabella had said many things which she hoped had been spoken in haste, and would never be said again; and upon this she was glad to rest altogether for present ease and comfort.