While we are on the topic...
http://news.harvard.edu/gazette/story/2013/10/harvard-professor-wins-nobel-in-chemistry/
"When Karplus was a boy, he recalled, his older brother got a chemistry set. He had wanted one too but got a microscope instead, because his parents didn’t want both boys perhaps setting off small explosions. (“The feeling was that two chemistry sets in the family would be too much,” he explained.) Disappointed at first, he discovered rotifers and watched their rotor-headed gyrations for hours in the microscope, which opened his eyes to the wonders of science."
"While an undergraduate, Karplus also worked with George Wald, performing calculations for him in the vision experiments that by 1967 led to Wald’s share of the Nobel Prize in Medicine or Physiology."
This shows that for some kids, it really came from within. First, he could have asked for different toys. Second, even having getting something else, he can choose to be bored and do other normal kid stuff. But he still doing the same thing at the age of 83.