This is an unusual mix by this quirky award winning author. Predominantly it comprises sequences that are auto-biograpical but also includes biographical facts that are often largely unknown because they have been tacity supressed. It also includes fictional examples of his writings that have constituted a major part of his life.  The book is predicated on the idea that Professor Williams is trapped on a small island and talks to himself in order to keep his memories refreshed and his mind  intact.
The reflections and the stories span the world. In one sense, this could be viewed as a travalogue with plenty of twists and turns. It will certainly take you on a journey. It's very funny in many parts but it's also disturbing in some measure, packaging as it does adult content including incites into mental illness and frank revelations about early sexual experiences.  
Most of all, it is an uplifting, entertaining and illuminating read packed with information very hard or impossible to find anywhere else.