He knew not that he had a pre-engaged heart to attack.
Of _that_ he had no suspicion.

He considered her rather as one who had never thought on the subject enough to be in danger; who had been guarded by youth, a youth of mind as lovely as of person; whose modesty had prevented her from understanding his attentions, and who was still overpowered by the suddenness of addresses so wholly unexpected, and the novelty of a situation which her fancy had never taken into account.
Must it not follow of course, that, when he was understood, he should succeed?
He believed it fully.

Love such as his, in a man like himself, must with perseverance secure a return, and at no great distance; and he had so much delight in the idea of obliging her to love him in a very short time, that her not loving him now was scarcely regretted.

A little difficulty to be overcome was no evil to Henry Crawford.

He rather derived spirits from it.