I believe that each of these great inventions--language, the family, the use of tools, government, science, art, and philosophy--has the quality of so combining the potentialities of every human temperament, that each can be learned and perpetuated by any group of human beings, regardless of race, and regardless of the type of civilization within which their progenitors lived; so that a newborn infant from the most primitive tribe in New Guinea is as intrinsically capable of graduation from Harvard, or writing a sonnet, or inventing a new form of radar as an infant born on Beacon Hill.
But I believe, also, that once a child has been reared in New Guinea or Boston or Leningrad or Tibet, he embodies the culture within which he is reared, and differs from those who are reared elsewhere so