John Irving said this quote

“ Mother's intentions were always sound, never muddy; I don't imagine that she troubled herself to feel very guilty. But the Rev. Mr. Merrill was a man who took to wallowing in guilt; his remorse, after all, was all he had to cling to-especially after his scant courage left him, and he was forced to acknowledge that he would never be brave enough to abandon his miserable wife and children for my mother. He would continue to torture himself, of course, with the insistent and self-destructive notion that he loved my mother. I suppose that his love of my mother was as intellectually detached from feeling and action as his belief was also subject to his immense capacity for remote and unrealistic interpretation. My mother was a healthier animal; when he said he wouldn't leave his family for her, she simply put him out of her mind and went on singing.But as incapable as he was of a heartfelt response to a real situation, the Rev. Mr. Merrill was tirelessly capable of thinking; he pondered and brooded and surmised and second-guessed my mother to death. ”