The idea is if you use those two shapes and try to colour the plane with them so the colours match, then the only way that you can do this is to produce a pattern which never repeats itself.
My younger brother ended up the British chess champion 10 times, a record.
I'm pretty tenacious when it comes to problems.
My father came from a Quaker family. His father was a professional artist who did portraits - very traditional, a lot of religious subjects.
My own way of thinking is to ponder long and I hope deeply on problems and for a long time which I keep away for years and years and I never really let them go.
I think I am intrigued by paradoxes. If something seems to be a paradox, it has something deeper, something worth exploring.
