From infancy through childhood and adolescence, the early years of life determine the adults we become. Molding the next generation into vigorous, productive global citizens demands effective parenting, nourishment for the developing brain, ample time for play, and smart choices about tough calls like genetic screening. A whole child needs stimulation, protection from danger, and the right medical care delivered at the right time. How do we allow children to thrive? What should older generations bequeath to the youngest one? What fosters resilience?