This book is a continuation of the books "Meditate every day '(bestseller, vipassana meditation method) and" The Eight Steps to Happiness "(more comprehensive description of the dynamics set up to progress), which provide the foundation for approach this book dedicated to advanced states of meditation.
There are few books in French on the subject (Ajahn Brahm has also proposed a method, translated into French). After reading this book in English, I take pleasure in rereading it in a convincing translation quality.
This book is very inspiring, precise and rich in content. I recommend it without hesitation.