That particular odyssey is now over. My mind is now at rest.

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

That particular odyssey is now over. My mind is now at rest.

I was so obsessed by this problem that I was thinking about it all the time - when I woke up in the morning, when I went to sleep at night - and that went on for eight years.

I carried this problem around in my head basically the whole time. I would wake up with it first thing in the morning, I would be thinking about it all day, and I would be thinking about it when I went to sleep. Without distraction I would have the same thing going round and round in my mind.

The only way I could relax was when I was with my children.

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