I started with the book of Jeanne-Siaud-Facchin "Too intelligent to be happy," I found great but some tinged scent of naivety bothered me, I do not know how to say ... I was missing elements, I found in the book of Monique de Kermadec, at least in part. I like this book full of references that do not leave us adrift but does attempt to hang up the concrete to the player. I would say the two books are complementary and quite help to better understand when is recognizable. While the book Siaud-Facchin paints a more detailed picture in which it is easier to recognize it or not, Monique de Kermadec remains focused on findings and possible solutions on clinical comparisons between "normal" people and zebras. This helps to better target certain psychological disorders, and numbers of concrete operating differences. Thank you for these books anyway, which are both essential to the zebra which seeks.