The Fountainhead Part 4, Chapter 10
Peter wanders around the city after a rainfall, and runs into Catherine Halsey. She has been working in Washington and is just in town for a business trip. She seems to have lost all sense of self; Peter tells her he is unhappy and she says that many people are unhappy. He asks her how she felt when she found out that he married and she says she felt as any other young person would feel in such a situation. He tells her he would apologize to her but it seems beside the point; he says that the greatest wrong he committed was not doing what he wanted to do, which was to marry her. She leaves, and tells him she will call him when she comes into town again.