Book excerpt: A mother's love and gentleness are inexpressible, her loyalty unshakable, her influence eternal, and, as one nine-year-old said, "it's her job to nag." A mother has been called "an angel on earth," "the truest friend we have," and "the most precious of all good gifts." In this tribute to mothers, H. Jackson Brown, Jr. author of such bestsellers as Life's Little Instruction Book and Live and Learn and Pass It On, warms your heart with reflections on the tenderness, endurance, and majesty of a mother's love.