serenity (serennity)

The lines left by youth deepen and become more conspicuous in age, and one can generally read the story of the three first decades in the faces of older people. Mrs. Dorriman, suffering in her youth from injustice and a want of affection, bore the marks of both; nothing but her real sweetness of temper had saved her from peevishness, for fretfulness is as much the result of perpetual repression in one feeble by nature, as violence and anger is the outcome of an unchecked temper in youth.