Daniel Tammet is the author of "Born on a Blue Day," about his life with high-functioning autistic savant syndrome. He runs the language-learning site Optimnem, and his new book is "Embracing the Wide Sky: A Tour Across the Horizons of the Mind."

Why you should listen

Daniel Tammet is a writer, linguist and educator. He is the creator of Optimnem, a website that has provided language learning instruction to thousands around the globe. His 2006 memoir "Born on a Blue Day" describes his life with high-functioning autistic savant syndrome; his new book, "Embracing the Wide Sky: A Tour Across the Horizons of the Mind," is a personal and scientific exploration of how the brain works and the differences and similarities between savant and non-savant minds.

Tammet set a European record on March 14, 2004, when he recited the mathematical constant pi (3.141...) to 22,514 decimal places from memory in a time of 5 hours, 9 minutes.

Daniel Tammet’s TED talk