The Fountainhead Part 3, Chapter 4
As they are about to get on the yacht, Dominique asks Wynand what the words on his boat, I Do, mean. He replies that they are an answer to everyone who declared he didn't run things (while he was growing up). He shows her to her cabin and exits into his own, leaving her alone until dinner, at which point she tells him that she doesn't need to get used to the idea of being here, that she has been used to it since before she went to his office. They talk about what it means to be a true hater of mankind: to accept and love anything and everyone equally. He says, "One can't love man without hating most of the creatures who pretend to bear his name." Part 3, Chapter 4, pg. 444. They talk effortlessly. After dinner, she waits for what she knows will happen, but they sit for quite some time, talking, until he suggests they go on deck. They talk about how neither one has ever felt small while looking at the ocean, or the planets, or the sky; they only feel more certain about man's greatness. Wynand asks what it is that the people who love to proclaim how small they feel really fear. Dominique says that if she knew the answer, she would make peace with the world. He asks her to marry him, telling her that it would be only a tool of her self-destruction, and that he loves her. She accepts. He says that he wants their marriage to be important, so he won't touch her until they are married. Wynand kisses her goodnight, and she goes to her cabin.