I was looking for this. My take on this is, in the nature or nurture debate, it is more useful to just assume nurture, because assuming nature is just a dead end.

You could also say that geniuses are made, not born. There is a wonderful book/interview with https://en.wikipedia.org/wiki/L%C3%A1szl%C3%B3_Polg%C3%A1r that explores this.