“There’s an old dictum in medicine,” he finally says. “If You can’t help, don’t do any harm. Let nature take its course. We may have already hurt her. We’ve slowed down her heart. Too many times.” The words carry defeat, exhaustion, anger.
This passage stands out because it shows that being a skilled surgeon also means knowing when to stop. Dr. Ducker is not just thinking technically, but ethically: if he cannot help Mrs. Kelly, he should not cause more harm. The line also reveals his exhaustion and frustration, which makes him feel more human.