What I suspect is that the lack of care and affection that he went through during his terrible childhood stimulates his creativity and foster his will to search for an ultimate truth in natural philosophy.

So if he had a normal childhood, full of care, love and a happy and complete family, would he still achieve that much?

Thanks in advance.

Suggested Reading:

Happiness: A Guide to Developing Life's Most Important SkillA molecular biologist turned Buddhist monk, described by scientists as "the happiest man alive," demonstrates how to develop the inner conditions for true happiness.