Nature or Nurture or none ??

The ongoing discussion around the question of Nature(Brain) vs Nurture(social upbringing) is missing an important scenario.
  Factor that decides a person's character
is actually a combo of both.
The more weight goes to the Nature rather than the way a person is nurtured.
I would say this affirmly because I have seen cases where both the parents are calm natured and the society around is also peaceful but the Nature of the kid is different. This may be because the kid has a brain that has a different configuration in contrast to ones parent's.
Why would a children's brain can be so much different than his parents ? It can be because of the time's technological changes and variation in supplied nutrition in contrast to their parents , while his brain was growing.