How we cite our quotes: Citations follow this format: (Chapter.Paragraph)
Quote #1
It pleased Ethan to have surprised a pair of lovers on the spot where he and Mattie had stood with such a thirst for each other in their hearts; but he felt a pang at the thought that these two need not hide their happiness. (4.26)
This passage shows that Ethan was aware that he was living a lie. This makes it all the more bewildering that he takes no steps to try to change his situation. Maybe it's not so bewildering. He's been told "no" about so many things, so many times that he hardly dares go beyond the simple pleasure of having Mattie's company.
Quote #2
She had an eye to see and an ear to hear: he could show her things and tell her things, and taste the bliss of feeling that all he imparted left long reverberations and echoes he could wake at will. (1.10)
This is a fancy way of saying that they Mattie not only listened to Ethan, but also understood him, and (this is big one) could talk to him. They have a lot in common.
Quote #3
The fact that he had no right to show his feelings, and thus provoke the expression of hers, made him attach a fantastic importance to every change in her look and tone. (2.38)
Not only are Ethan and Mattie hiding their love from others, but from each other as well. As long as nothing is said or done, they can pretend that they aren't doing anything wrong, and they aren't hurting Zeena.
Quote #4
When the door of her room had closed on her he remembered that he had not even touched her hand. (5.41)
We think this line is mostly here to make sure we understand that Ethan and Mattie haven't had sex. Though Ethan has been emotionally unfaithful to Zeena, he hasn't been physically unfaithful.
Quote #5
"You're a bad girl, Mattie Silver, and I always known it. It's the way your father begun, and I was warned of it when I took you, and I tried to keep my things where you couldn't get at 'em-and now you've took from me the one I cared for most of all-" (7.127)
If Zeena hadn't seen, felt, and noticed the attraction that Ethan believes is invisible to every one, the broken dish might not seem like the end of her marriage. But bringing up Mattie's father is harsh. However, using the pickle-dish was harsh, too. It was cruel of Mattie to play out a fantasy of taking Zeena's place.