Read it through once

In all the seven bygone years, Hester Prynne had never before been false to the symbol on her bosom. It may be that it was the talisman of a stern and severe, but yet a guardian spirit, who now forsook her; as recognizing that, in spite of his strict watch over her heart, some new evil had crept into it, or some old one had never been expelled. As for little Pearl, the earnestness soon passed out of her face.