I really have no words to describe the feelings that the work of Escher awakes in me. It's like watching your dreams printed in a paper. This is what this book is about. 76 dreams put into paper. I can really spend hours watching every detail in the drawings. Then you can let some time pass and watch it again and find something different. It's great also to know Escher's thoughts on his work. You can then understand more that little reptile crawling out of the paper. I recommend this book if you want to know what is Escher's work about and also have the chance to admire his work in full page.
Great book, really worth the money.