Carlos Ruiz Zafón's The Shadow of the Wind is indeed a great and powerful novel. In addition to fantastic reading experience it offers a lot of philosophical and moral implications.
And all with a dose of good humor and in very imaginative way.
I also strongly advice to read/listen to Carlos' interviews. One of them (in English) is added to Audible.com audio version of the book.
What is interesting there is to discover how honest and humble to us, his readers is Carlos.
And, finally - all is about the Love ....