Harry and Voldermort's powers

[Tandra]

No: HPFGUIDX 182527

So, I think I might have posted this question before or something like
it, but it came to me today as I was rereading the 6th book. What
exactly makes Voldermort so powerful? His father was a Muggle and his
mother we never see that she was overly powerful. So I don't see that
it could have been in his genes.

The same with Harry really, though it seems we see his parents were
talented in their own ways, nothing suggests the combo of their
abilities would make a "great" wizard.

I'm not sure I'm phrasing this right and it is late. I hope what I am
trying to say is coming across. Please and thank you to anyone that
chooses to reply.


Tandra