He begs her, for their sake, never to let that idea enter her mind—calling it dangerously fascinating.

“My darling,” said he, “I beg of you, for my sake and for our child’s sake, as well as for your own, that you will never for one instant let that idea enter your mind! There is nothing so dangerous, so fascinating, to a temperament like yours. It is a false and foolish fancy. Can you not trust me as a physician when I tell you so?”