The philosophy is definitely the most important part of the book, to S. M. Kois, as more than half of the book is devoted to these compelling discussions, which provoke thought very effectively. Even though the plot often takes the passenger seat to the theme, the dialogue and descriptions drive the story forward at a fast pace. The content of the discussions paired with Charlie’s age and circumstance makes the story fascinating.
It does seem a bit unrealistic that Charlie is so young and yet so intelligent, but there are certainly a few children out there with IQs as high as his, and his questionable mental stability makes this more realistic. He is naive, like a seven-year-old, and his relationship with his brother is empathetic and emotive. That relationship and the scientific discoveries work well together to bolster the theme of the book.
This novel is perfect for people who prefer philosophical books and value theme over plot. The characters are well developed, so there is no shortage of literary merit there. With straight-forward prose and in-depth discussions of empathy, animal rights (though this second one often feels out of place and a step away from the plot and theme on the whole), and the nature of reality, this book is an interesting contribution to philosophy, while containing a decently compelling story, as well.