Would you change the world if you had the means to ? How far would you go to achieve that goal ? Does the end justify the means ? What about the consequences ? 
 This book is written expertly with a simple yet very interesting idea about dreams and their effects on the real world. 
 The story brought a very interesting discussion I had with my brother years ago. He asked me -being a doctor - if I save someone's life and that someone murders another human being. Am I to blame ? How responsible are we for all the "good" deeds we do that create unintentional evil. 
 This is a thought-provoking & imaginative story about humanity, self-righteousness, power without control and morality. 
 I believe this book was an inspiration for Christopher Nolan to create his masterpiece Inception.