What is the one thing that could cure Dimmesdale according to Chillingworth? What was Dimmesdale's reply?

Chillingworth then tells Dimmesdale that as his physician he cannot cure him—his ailment sees to come from his spiritual side. Chillingworth demands to be told what sort of secret Dimmesdale is hiding. The minister, upset by this, passionately cries out, "No!—not to thee!—not to an earthly physician!" and leaves the room.