I first saw this book briefly in a bookshop and thought it was a revelation. I then read some of the reviews about this book and doubted my initial thoughts. I went ahead and ordered this book and haven't been disappointed. If you want a how to draw book, then this isnt for you. I already have lots of this type of book, from the very basic to the more advanced, but wanted more theory, more explantaiton as to how the great masters created their work. This book is full of lost secrects, and by taking the time to study and read it, I feel it has broadened my understanding and re-ignited my enthusiasm. Whilst I cannot devote the time to studying for four years five hours a day, I believe the only way to improve is to draw, draw and then draw some more using the techniques suggested in this book. If you don't want this depth of theory, the drawings alone are beautiful, and well worth the money. Other books might give you more instruction, but in the end, the only way to improve your skills is to practice, and this book certainly inspired me.