This is a key phrase for understanding the Goulds' marriage, both psychologically and in its allegoric meaning as the marriage of material progress and altruism. As mentioned in an earlier note , materialism requires altruism precisely to hold its "best feelings," i.e., the faith that it actually elevates mankind. Without this faith, material progress stands revealed as nothing but a quest for power, another conquering dream-ideal like any other, with a peculiarly barren and inorganic character. This is why the barren, driven, repressed materialist Charles requires Emily, and why, having half-admitted it, he feels emotions of "gratitude and tenderness."

On her side, Emily, who has just "relented" in her opposition to material progress -- who has come up against her need for it -- is gladdened to realize that it needs her too. The balance of power in their relationship is thus restored.