This book is both brilliant and disturbing. It all too well examines the evil of the human heart and explores the nature of free will in some interesting ways. Several places suggest that the Ludovico Technique, which makes Alex sick at the thought of evil and therefore remove his free will, make him inhuman. Yet the depth of evil in Alex is such that he is equally without free will before–he is in bondage to the sinful corruption of his heart.
In another sense, I found it to be a fascinating linguistic study, since almost 50% of the words are invented and yet the reader begins to understand quite quickly. It truly demonstrates that the meaning of words is based on usage and can often be deduced from context.