I cannot praise the book too highly ... It is a matter of regret that its length has made it impossible for me to "read it from cover to cover" before producing a review. But it is with delight that I look forward to having it occupy a place on my bedside table for many weeks to come. (Joe Sinclair, New Nurturing Potential)

Synesthesia proves that perceptual reality is not one-size-fits-all. For the current state of the science, you won't find a more comprehensive collection of expert voices than the one you're holding now. (David Eagleman, Neuroscientist, and author of 'Sum: Forty Tales from the Afterlives', and 'Wednesday Is Indigo Blue: Discovering the Brain of Synesthesia')

An invaluably lucid and comprehensive guide to the multi-coloured world of synaesthesia by two of the leading researchers in the field. (Daniel Tammet, writer, synesthete, and author of 'Born on a Blue Day', 'Embracing the Wide Sky', and 'Thinking in Numbers')