Rear Child in Love.
Have the child reared for the first ten years of its life in the open, in close touch with nature, a barefoot boy with all that implies for physical stamina, but have him reared in love.
Take the little yellow California poppy and by selecting over and over again the qualities you wish to develop you have brought forth an orange poppy, a crimson poppy, a blue poppy. Cannot the same results be accomplished with the human being? Is not the child as responsive?