I loved doing problems in school. I'd take them home and make up new ones of my own. - Andrew Wiles

Here was a problem, that I, a ten year old, could understand and I knew from that moment that I would never let it go. I had to solve it.

But perhaps that's always the way with math problems, and we just have to find new ones to capture our attention.

However impenetrable it seems, if you don't try it, then you can never do it.