The Rule of Four
First edition cover
|Author||Ian Caldwell and Dustin Thomason|
|Publisher||The Dial Press|
|Media type||Print (Hardback, Paperback)|
|Pages||384 pp (first edition, hardback)|
|ISBN||ISBN 0-385-33711-6 (first edition, hardback)|
|LC Class||PS3603.A435 R85 2004|
- This article relates to the 2004 novel. For the legal practice, see Rule of four.
The Rule of Four is a novel written by the American authors Ian Caldwell and Dustin Thomason, and published in 2004. Caldwell, a Princeton University graduate, and Thomason, a Harvard College graduate, are childhood friends who wrote the book after their graduations.
The Rule of Four reached the top of the New York Times Bestseller list, where it remained for more than six months.
The book is set on the Princeton campus during Easter weekend in 1999. The story involves four Princeton seniors, both friends and roommates, getting ready for graduation: Tom, Paul, Charlie and Gil. Tom and Paul are trying to solve the mystery contained within an extremely rare, and mysterious book, the Hypnerotomachia Poliphili, which was published as an incunabulum in 1499 in Venice, Italy; it is a complex allegorical work written in a modified Italian language frequently interspersed with material from other languages as well as its anonymous author's own made-up words.
Tom, or Thomas Corelli Sullivan, often found himself distracted by his father's death. His father was a close friend of Richard Curry and Vincent Taft, both of them advisors for Paul's thesis. The flashback goes on as Taft distanced himself from both Curry and Tom's father at some point to carry out his own research. Taft also developed a rivalry with both men in the quest to decode the Hypnerotomachia's 500-year-old secret. By luck, Tom's father found a letter, dating back to Renaissance times, referring to the book's supposed author, Francesco Colonna. Tom's father even wrote a book, The Belladona Document, which revolves around the mysterious letter. But, a negative critique from his academic rival Vincent Taft spelled the demise of the book's popularity as well as his career. Taft allegedly also stole a diary written by a contemporary of Colonna's that Curry had found. That diary, as Paul and Tom discovered it later, would prove to help the duo to decode the elusive Hypnerotomachia. Paul discovers that the Hypnerotomachia contains a number of hidden and enciphered texts, with the solution to each one revealing a clue towards the next one. However, after solving a chain of several of these, he finds a text that says that there will be no more clues and he must solve the rest of the book on his own. He realizes that the entire book contains a message encoded by following a "rule of four", in which the message starts with one letter, then moves to a letter four rows down, then ten columns right, then two rows up, then two columns left, and repeating. The placement of this hidden text throughout the entire book explains the Hypnerotomachia's strange syntax, use of multiple languages, and neologisms. Through days of tough work, Paul and Tom managed to unravel a series of riddles, which they solved soon later. The application of the "rule of four" method enabled them to slowly piece together portions of a dark Renaissance secret that has avoided human knowledge for centuries.
Charlie is already married with two children; Tom is still traumatized by the event that occurred that day. He has subsequently become a software analyst and gotten engaged to another woman, only for it to fail later. One day, he receives a tube in the mail containing an authentic ancient (and unknown) Botticelli canvas. The tube has a mysterious return address in Florence, Italy. Tom realizes the address is a code by his long lost friend Paul Harris, urging him to head towards Italy soon.
The book has been well received by critics, with the New York Times Book Review calling it "the ultimate puzzle book", and several others comparing it positively to the Da Vinci Code. It received an aggregate score of 74 out of 100 (based on 17 reviews) on the review aggregator Metacritic.
- Maslin, Janet (2004-05-06). "Books of the Times: Deciphering a Mysterious Text and Puzzles of the Soul". The New York Times Book Review. Retrieved 2009-04-19.
- "Book review: The Rule of Four". Retrieved 2006-08-05.
- "The Rule Of Four by Ian Caldwell and Dustin Thomason: Review". Metacritic. Retrieved 2009-09-08.[dead link]