There are proofs that date back to the Greeks that are still valid today.

I loved doing problems in school.

Some mathematics problems look simple, and you try them for a year or so, and then you try them for a hundred years, and it turns out that they're extremely hard to solve. There's no reason why these problems shouldn't be easy, and yet they turn out to be extremely intricate. Fermat's Last Theorem is the most beautiful example of this.

I had this rare privilege of being able to pursue in my adult life, what had been my childhood dream.

Always try the problem that matters most to you.

The definition of a good mathematical problem is the mathematics it generates rather than the problem itself.

We've lost something that's been with us for so long, and something that drew a lot of us into mathematics. But perhaps that's always the way with math problems, and we just have to find new ones to capture our attention.