Fermat was my childhood passion. - Andrew Wiles

I grew up in Cambridge in England, and my love of mathematics dates from those early childhood days.

But what has made this problem special for amateurs is that there's a tiny possibility that there does exist an elegant 17th-century proof.

But the best problem I ever found, I found in my local public library. I was just browsing through the section of math books and I found this one book, which was all about one particular problem -- Fermat's Last Theorem.