
That may be overdoing it a little (or a lot), but the point still stands that a fair number of people consider this book to have played a major part in their lives. Entire university courses can be based around it.
At this point, I should probably try to summarise what the book is actually about, although I confess to being slightly nervous about doing so. Whilst fairly confident that I understand its central messages, I wouldn't say that I'm certain, and it wouldn't surprise me if some subtle point has passed me by.
It is not about Kurt Gödel, M.C. Escher, and J.S. Bach, at least not centrally. Instead, the main thesis of the book concerns how meaning can arise from meaningless symbols, by using formal systems which contain tricks such as self-reference, self-replication, recursion and strange loops, and by using tools such as paradox, infinity, and isomorphism, and particularly examining how this relates to the emergence of intelligence from unintelligent neurons. Throughout the book, the works of the three geniuses in the title are used as a touchstone to which all these concepts can be linked to, showing how the same ideas are mirrored in their work, and in real life.