If parents nourish and evolve their own genetics that is a good start. Next, they can nourish and stimulate the infant in the womb. The newborn needs the stimulus of loving touch and warmth and gentle words, and a lack of other stimuli. After this the child needs extreem variety of stimulation in a context of joy and love so to open a wide variety of potentials into our world. At age eleven the potentials focus that applied intelligence be developed in behalf of the given environment and one's interests.
Creativity is given open reins.
A child raised by wolves would not speak, maybe not even walk. A child raised by nervous parents will walk and talk but may never fully understand peace and love and cooperation. A child raised by a loving world community may speak twenty languages, be in complete peace, move without hesitation into continued improvement of self as relative to a wholesome world, and cooperate with others with a charm and grace that would befuddle us lizard brains. This person's joy and excitement for life could power a creativity lightyears advanced from our own. Imagine Einstein, Jesus and Cleopatra holding hands as they skip down the street with the students from a Sudbury school.