I tend to put stock in both, genetics and the way you were raised. I think it is a combination of the genetic background you inherited plus the emphasis of values layering that core of genetics. A good solid genetic core, with no or little evidence of dark qualities is a good start. That would be synonomous with a base intelligence level, then building upon that by enriching it with education and life experiences. A person who has an upbringing with education and positive life experiences will likely produce a posiotive result in terms of personality. It should also be noted that what we are talking about here is as individual as the different types of flowers that burst forth in spring. There are lots of similarities, but each flower is it's own creation, having some uniquely individual quality to offer.