The Creature of My Own Imagination

Though I had, in the course of our acquaintance, been often sensible of some difference in our opinions on points, too, of some moment, it had not entered my imagination to conceive the difference could be such as she had now proved it. . . . all this together most grievously convinced me that I had never understood her before and as far as related to mind, it had been the creature of my own imagination, not Miss Crawford, that I had been too apt to dwell on for many months past.

Jane Austen Mansfield Park