Several critics noted that the book is a very humorous read, and that it points out many of the aspects of human behaviour as exhibited by the wealthy and famous individuals it describes. In a 1975 review for
The Herald-Sun, Robert Salisbury calls it “The best work of its kind since Flaubert’s
Dictionary of Received Ideas”, and a small experimental aside from [Donleavy's] novelistic chores that is enjoyable in form and content”, but notes a desire for Donleavy to return to writing novels, citing
The Ginger Man, possibly Donleavy's most well-recognized work. Bill Erdman, writing for
The World of Coos Bay, Oregon notes that the book is humorous, and that “the advice Donleavy provides seems both ludicrous and accurate", concluding with “
The Unexpurgated Code is best read alone. When others are around, you might be required to explain why you’re laughing out loud…” An April 7, 2025, review by
Dwight Garner in
The New York Times was published around the book's 50th anniversary, calling it “…possibly, the funniest book ever written”. ==References==