Daniel Tammet has Savant syndrome, a rare form of Asperger's which gives him the ability to remember long sequences of numbers (seeing the numbers as having various colours and textures) and to be able to learn to speak a language from scratch within a week.
The book isn't just an autobiography. Tammet explains incredibly eloquently about how he experiences numbers and words, giving the reader a glimpse inside an extraordinary mind.
Tammets explores his childhood experinces, the pain of being an outsider at school, how he discovered he was gay and found a loving relationship and most importantly how he experinces the world. I particularly enjoyed the chapters about the teaching assignment he took in Lithuania and learning Lithuanian, something which most of us would find daunting even without autism.
The writing is quite sparce, lacking flowery description, as you might expect being written by someone with such an analytical brain. However there are parts which are still very touching. Tammet has had to teach himself how to function socially, how to read body language and verbal clues. I think if nothing else, this book has taught me that idioms such as 'pull up a chair' or 'feeling under the weather' can be incredibly confusing for people who take language so literally.
A really intersting read. Recommended.