Why is that? As a child, Daniel was diagnosed as autistic. He couldn't make friends. He was different from other children. Daniel felt the colours of weekdays and he knew he was born on a blue day. Wednesdays for him are always blue like the number nine or the sound of people arguing. Another his unique ability is to do extremely difficult mathematical calculations. He imagines them as shapes and colours ('289 is an ugly number', - he says). On the TV programme that made him famous in the UK, he managed to recite 22,514 numbers from pi perfectly. If you tell Daniel your birth date, he can tell you what day of the week you were born on, and what day of the week it will be on your 65th birthday. Daniel counts everything. He eats exactly forty-five grams of porridge for breakfast each morning and he brushes his teeth for exactly two minutes. He doesn't like walking on the beach near his home because there are too many pebbles to count. Daniel's other great love, besides numbers, is learning languages. He speaks ten, and he managed to learn Icelandic in a week for a TV programme in Iceland. He is now a bestselling author, his books including Born on a Blue Day, Embracing the Wide Sky and Thinking in Numbers.