The regular division of the plane into congruent figures evoking an association in the observer with a familiar natural object is one of these hobbies or problems. . . I have embarked on this geometric problem again and again over the years, trying to throw light on different aspects each time. I cannot imagine what my life would be like if this problem had never occurred to me; one might say that I am head over heels in love with it, and I still don't know why.
We had a completely deniable exchange of papers - in the winter before the 1997 election - with [Tony] Blair, setting out what we thought were the realistic parameters for a solution: and we were getting reasonable responses back from him. That's what led to Blair's visit to Belfast on May 16, 1997 - two weeks after he became Prime Minister and his first official visit outside London.