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

I loved doing problems in school.

I never use a computer.

Pure mathematicians just love to try unsolved problems - they love a challenge.

Fermat said he had a proof.

Perhaps I could best describe my experience of doing mathematics in terms of entering a dark mansion. You go into the first room and it's dark, completely dark. You stumble around, bumping into the furniture. Gradually, you learn where each piece of furniture is. And finally, after six months or so, you find the light switch and turn it on. Suddenly, it's all illuminated and you can see exactly where you were. Then you enter the next dark room.

Mathematics... is a bit like discovering oil. ... But mathematics has one great advantage over oil, in that no one has yet ... found a way that you can keep using the same oil forever.